2621606256 has 80 divisors (see below), whose sum is σ = 7708569120. Its totient is φ = 852549120.

The previous prime is 2621606249. The next prime is 2621606287. The reversal of 2621606256 is 6526061262.

2621606256 is a `hidden beast` number, since 2 + 6 + 21 + 6 + 0 + 625 + 6 = 666.

It is a super-2 number, since 2×2621606256² = 13745638722996675072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2621606256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56295 + ... + 91718.

It is an arithmetic number, because the mean of its divisors is an integer number (96357114).

Almost surely, 2^2621606256 is an apocalyptic number.

It is an amenable number.

2621606256 is an abundant number, since it is smaller than the sum of its proper divisors (5086962864).

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

2621606256 is a wasteful number, since it uses less digits than its factorization.

2621606256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148071 (or 148059 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2621606256 is about 51201.6235680081. The cubic root of 2621606256 is about 1378.8673503933.

The spelling of 2621606256 in words is "two billion, six hundred twenty-one million, six hundred six thousand, two hundred fifty-six".