61597692 has 96 divisors (see below), whose sum is σ = 174628160. Its totient is φ = 18662400.

The previous prime is 61597663. The next prime is 61597693. The reversal of 61597692 is 29679516.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61597693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102192 + ... + 102792.

Almost surely, 2^61597692 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 61597692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87314080).

61597692 is an abundant number, since it is smaller than the sum of its proper divisors (113030468).

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

61597692 is a wasteful number, since it uses less digits than its factorization.

61597692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700 (or 692 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 61597692 is about 7848.4197135474. The cubic root of 61597692 is about 394.9312319530.

The spelling of 61597692 in words is "sixty-one million, five hundred ninety-seven thousand, six hundred ninety-two".