61655274 has 12 divisors (see below), whose sum is σ = 133586466. Its totient is φ = 20551752.

The previous prime is 61655207. The next prime is 61655317. The reversal of 61655274 is 47255616.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59675625 + 1979649 = 7725^2 + 1407^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1712629 + ... + 1712664.

Almost surely, 2^61655274 is an apocalyptic number.

61655274 is an abundant number, since it is smaller than the sum of its proper divisors (71931192).

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

61655274 is a wasteful number, since it uses less digits than its factorization.

61655274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425301 (or 3425298 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 61655274 is about 7852.0872384354. The cubic root of 61655274 is about 395.0542552190.

The spelling of 61655274 in words is "sixty-one million, six hundred fifty-five thousand, two hundred seventy-four".