9977620730 has 32 divisors (see below), whose sum is σ = 22391337600. Its totient is φ = 3109907520.

The previous prime is 9977620729. The next prime is 9977620747. The reversal of 9977620730 is 370267799.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6478205 + ... + 6479744.

It is an arithmetic number, because the mean of its divisors is an integer number (699729300).

Almost surely, 2^9977620730 is an apocalyptic number.

9977620730 is an abundant number, since it is smaller than the sum of its proper divisors (12413716870).

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

9977620730 is a wasteful number, since it uses less digits than its factorization.

9977620730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12957974.

The product of its (nonzero) digits is 1000188, while the sum is 50.

The square root of 9977620730 is about 99888.0409758846. The cubic root of 9977620730 is about 2152.8263337857.

The spelling of 9977620730 in words is "nine billion, nine hundred seventy-seven million, six hundred twenty thousand, seven hundred thirty".