61598923 has 4 divisors (see below), whose sum is σ = 61632448. Its totient is φ = 61565400.

The previous prime is 61598903. The next prime is 61598981. The reversal of 61598923 is 32989516.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61598923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61598923.

It is not an unprimeable number, because it can be changed into a prime (61598903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13836 + ... + 17737.

It is an arithmetic number, because the mean of its divisors is an integer number (15408112).

Almost surely, 2^61598923 is an apocalyptic number.

61598923 is a deficient number, since it is larger than the sum of its proper divisors (33525).

61598923 is a wasteful number, since it uses less digits than its factorization.

61598923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33524.

The product of its digits is 116640, while the sum is 43.

The square root of 61598923 is about 7848.4981365864. The cubic root of 61598923 is about 394.9338627719.

The spelling of 61598923 in words is "sixty-one million, five hundred ninety-eight thousand, nine hundred twenty-three".