2620046556 has 18 divisors (see below), whose sum is σ = 6622895552. Its totient is φ = 873348840.

The previous prime is 2620046549. The next prime is 2620046581. The reversal of 2620046556 is 6556400262.

2620046556 is a `hidden beast` number, since 2 + 62 + 0 + 0 + 46 + 556 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2620046556² = 13729287911214922272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 72779071 = 2620046556 / (2 + 6 + 2 + 0 + 0 + 4 + 6 + 5 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 2620046556.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36389500 + ... + 36389571.

Almost surely, 2^2620046556 is an apocalyptic number.

It is an amenable number.

2620046556 is an abundant number, since it is smaller than the sum of its proper divisors (4002848996).

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

2620046556 is a wasteful number, since it uses less digits than its factorization.

2620046556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72779081 (or 72779076 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2620046556 is about 51186.3903396206. The cubic root of 2620046556 is about 1378.5938480905.

The spelling of 2620046556 in words is "two billion, six hundred twenty million, forty-six thousand, five hundred fifty-six".