2656530 has 32 divisors (see below), whose sum is σ = 7084800. Its totient is φ = 708336.

The previous prime is 2656529. The next prime is 2656547. The reversal of 2656530 is 356562.

2656530 is a `hidden beast` number, since 2 + 6 + 5 + 653 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2656494 and 2656503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4650 + ... + 5189.

It is an arithmetic number, because the mean of its divisors is an integer number (221400).

2^2656530 is an apocalyptic number.

2656530 is an abundant number, since it is smaller than the sum of its proper divisors (4428270).

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

2656530 is a wasteful number, since it uses less digits than its factorization.

2656530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855 (or 9849 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 2656530 is about 1629.8864991158. The cubic root of 2656530 is about 138.4963224575.

Subtracting from 2656530 its reverse (356562), we obtain a cube (2299968 = 132³).

The spelling of 2656530 in words is "two million, six hundred fifty-six thousand, five hundred thirty".