61390336 has 60 divisors (see below), whose sum is σ = 142745328. Its totient is φ = 26299392.

The previous prime is 61390321. The next prime is 61390337. The reversal of 61390336 is 63309316.

It is a junction number, because it is equal to n+sod(n) for n = 61390298 and 61390307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61390337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23865 + ... + 26311.

Almost surely, 2^61390336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61390336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71372664).

61390336 is an abundant number, since it is smaller than the sum of its proper divisors (81354992).

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

61390336 is an equidigital number, since it uses as much as digits as its factorization.

61390336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 61390336 is about 7835.1985297119. The cubic root of 61390336 is about 394.4875820896.

The spelling of 61390336 in words is "sixty-one million, three hundred ninety thousand, three hundred thirty-six".