2656312090 has 32 divisors (see below), whose sum is σ = 4992212736. Its totient is φ = 1015724160.

The previous prime is 2656312049. The next prime is 2656312091. The reversal of 2656312090 is 902136562.

It is not an unprimeable number, because it can be changed into a prime (2656312091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677235 + ... + 681145.

It is an arithmetic number, because the mean of its divisors is an integer number (156006648).

Almost surely, 2^2656312090 is an apocalyptic number.

2656312090 is a deficient number, since it is larger than the sum of its proper divisors (2335900646).

2656312090 is a wasteful number, since it uses less digits than its factorization.

2656312090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2656312090 is about 51539.4226781791. The cubic root of 2656312090 is about 1384.9253549243.

The spelling of 2656312090 in words is "two billion, six hundred fifty-six million, three hundred twelve thousand, ninety".