2656240474 has 4 divisors (see below), whose sum is σ = 3984360714. Its totient is φ = 1328120236.

The previous prime is 2656240469. The next prime is 2656240481. The reversal of 2656240474 is 4740426562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2586434449 + 69806025 = 50857^2 + 8355^2 .

It is a super-2 number, since 2×2656240474² = 14111226911431489352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664060117 + ... + 664060120.

Almost surely, 2^2656240474 is an apocalyptic number.

2656240474 is a deficient number, since it is larger than the sum of its proper divisors (1328120240).

2656240474 is a wasteful number, since it uses less digits than its factorization.

2656240474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328120239.

The product of its (nonzero) digits is 322560, while the sum is 40.

The square root of 2656240474 is about 51538.7279043633. The cubic root of 2656240474 is about 1384.9129086326.

The spelling of 2656240474 in words is "two billion, six hundred fifty-six million, two hundred forty thousand, four hundred seventy-four".