61897692 has 24 divisors (see below), whose sum is σ = 150708096. Its totient is φ = 19735408.

The previous prime is 61897639. The next prime is 61897699. The reversal of 61897692 is 29679816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61897699) 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, 111858 + ... + 112409.

It is an arithmetic number, because the mean of its divisors is an integer number (6279504).

Almost surely, 2^61897692 is an apocalyptic number.

It is an amenable number.

61897692 is an abundant number, since it is smaller than the sum of its proper divisors (88810404).

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

61897692 is a wasteful number, since it uses less digits than its factorization.

61897692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224297 (or 224295 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 61897692 is about 7867.5086272593. The cubic root of 61897692 is about 395.5713400515.

The spelling of 61897692 in words is "sixty-one million, eight hundred ninety-seven thousand, six hundred ninety-two".