3656740256 has 48 divisors (see below), whose sum is σ = 8209066824. Its totient is φ = 1588445184.

The previous prime is 3656740211. The next prime is 3656740279. The reversal of 3656740256 is 6520476563.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2674544656 + 982195600 = 51716^2 + 31340^2 .

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, 251465 + ... + 265608.

Almost surely, 2^3656740256 is an apocalyptic number.

It is an amenable number.

3656740256 is an abundant number, since it is smaller than the sum of its proper divisors (4552326568).

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

3656740256 is a wasteful number, since it uses less digits than its factorization.

3656740256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517113 (or 517105 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The square root of 3656740256 is about 60470.9868945431. The cubic root of 3656740256 is about 1540.6288902749.

The spelling of 3656740256 in words is "three billion, six hundred fifty-six million, seven hundred forty thousand, two hundred fifty-six".