2656620746 has 8 divisors (see below), whose sum is σ = 4291464324. Its totient is φ = 1226132640.

The previous prime is 2656620739. The next prime is 2656620749. The reversal of 2656620746 is 6470266562.

It can be written as a sum of positive squares in 2 ways, for example, as 2440854025 + 215766721 = 49405^2 + 14689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2656620697 and 2656620706.

It is not an unprimeable number, because it can be changed into a prime (2656620749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51088835 + ... + 51088886.

Almost surely, 2^2656620746 is an apocalyptic number.

2656620746 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2656620746 is a deficient number, since it is larger than the sum of its proper divisors (1634843578).

2656620746 is a wasteful number, since it uses less digits than its factorization.

2656620746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102177736.

The product of its (nonzero) digits is 725760, while the sum is 44.

The square root of 2656620746 is about 51542.4169592385. The cubic root of 2656620746 is about 1384.9789943249.

The spelling of 2656620746 in words is "two billion, six hundred fifty-six million, six hundred twenty thousand, seven hundred forty-six".