61657692 has 24 divisors (see below), whose sum is σ = 144041856. Its totient is φ = 20527728.

The previous prime is 61657669. The next prime is 61657693. The reversal of 61657692 is 29675616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61657693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9183 + ... + 14409.

It is an arithmetic number, because the mean of its divisors is an integer number (6001744).

Almost surely, 2^61657692 is an apocalyptic number.

It is an amenable number.

61657692 is an abundant number, since it is smaller than the sum of its proper divisors (82384164).

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

61657692 is a wasteful number, since it uses less digits than its factorization.

61657692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6217 (or 6215 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 61657692 is about 7852.2412087251. The cubic root of 61657692 is about 395.0594195715.

The spelling of 61657692 in words is "sixty-one million, six hundred fifty-seven thousand, six hundred ninety-two".