2630979720 has 96 divisors (see below), whose sum is σ = 8781828120. Its totient is φ = 682629120.

The previous prime is 2630979679. The next prime is 2630979727. The reversal of 2630979720 is 279790362.

It is a happy number.

2630979720 is a `hidden beast` number, since 2 + 630 + 9 + 7 + 9 + 7 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2123919396 + 507060324 = 46086^2 + 22518^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2630979727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85441 + ... + 112080.

Almost surely, 2^2630979720 is an apocalyptic number.

2630979720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2630979720 is an abundant number, since it is smaller than the sum of its proper divisors (6150848400).

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

2630979720 is a wasteful number, since it uses less digits than its factorization.

2630979720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197575 (or 197568 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 2630979720 is about 51293.0767258116. The cubic root of 2630979720 is about 1380.5087601141.

The spelling of 2630979720 in words is "two billion, six hundred thirty million, nine hundred seventy-nine thousand, seven hundred twenty".