61649692 has 24 divisors (see below), whose sum is σ = 116466336. Its totient is φ = 28385088.

The previous prime is 61649681. The next prime is 61649719. The reversal of 61649692 is 29694616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24978 + ... + 27334.

It is an arithmetic number, because the mean of its divisors is an integer number (4852764).

Almost surely, 2^61649692 is an apocalyptic number.

It is an amenable number.

61649692 is a deficient number, since it is larger than the sum of its proper divisors (54816644).

61649692 is a wasteful number, since it uses less digits than its factorization.

61649692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 61649692 is about 7851.7317834985. The cubic root of 61649692 is about 395.0423326953.

The spelling of 61649692 in words is "sixty-one million, six hundred forty-nine thousand, six hundred ninety-two".