56661674 has 4 divisors (see below), whose sum is σ = 84992514. Its totient is φ = 28330836.

The previous prime is 56661643. The next prime is 56661691. The reversal of 56661674 is 47616665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47616665 = 5 ⋅9523333.

It can be written as a sum of positive squares in only one way, i.e., 54390625 + 2271049 = 7375^2 + 1507^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165417 + ... + 14165420.

Almost surely, 2^56661674 is an apocalyptic number.

56661674 is a deficient number, since it is larger than the sum of its proper divisors (28330840).

56661674 is a wasteful number, since it uses less digits than its factorization.

56661674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28330839.

The product of its digits is 181440, while the sum is 41.

The square root of 56661674 is about 7527.3949012922. The cubic root of 56661674 is about 384.0871700614.

The spelling of 56661674 in words is "fifty-six million, six hundred sixty-one thousand, six hundred seventy-four".