2645031672 has 48 divisors (see below), whose sum is σ = 7428952440. Its totient is φ = 881676576.

The previous prime is 2645031661. The next prime is 2645031677. The reversal of 2645031672 is 2761305462.

2645031672 is a `hidden beast` number, since 2 + 645 + 0 + 3 + 1 + 6 + 7 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645031677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678363 + ... + 682250.

Almost surely, 2^2645031672 is an apocalyptic number.

It is an amenable number.

2645031672 is an abundant number, since it is smaller than the sum of its proper divisors (4783920768).

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

2645031672 is a wasteful number, since it uses less digits than its factorization.

2645031672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360634 (or 1360618 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 2645031672 is about 51429.8713978559. The cubic root of 2645031672 is about 1382.9621438812.

The spelling of 2645031672 in words is "two billion, six hundred forty-five million, thirty-one thousand, six hundred seventy-two".