61498140 has 48 divisors (see below), whose sum is σ = 187850880. Its totient is φ = 14908480.

The previous prime is 61498133. The next prime is 61498147. The reversal of 61498140 is 4189416.

61498140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61498133) and next prime (61498147).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61498147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45930 + ... + 47249.

It is an arithmetic number, because the mean of its divisors is an integer number (3913560).

Almost surely, 2^61498140 is an apocalyptic number.

61498140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61498140 is an abundant number, since it is smaller than the sum of its proper divisors (126352740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61498140 is a wasteful number, since it uses less digits than its factorization.

61498140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93202 (or 93200 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 61498140 is about 7842.0749805138. The cubic root of 61498140 is about 394.7183592937.

The spelling of 61498140 in words is "sixty-one million, four hundred ninety-eight thousand, one hundred forty".