980772665 has 8 divisors (see below), whose sum is σ = 1177630920. Its totient is φ = 784148992.

The previous prime is 980772649. The next prime is 980772673. The reversal of 980772665 is 566277089.

It can be written as a sum of positive squares in 4 ways, for example, as 542330944 + 438441721 = 23288^2 + 20939^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 980772665 - 2⁴ = 980772649 is a prime.

It is a super-2 number, since 2×980772665² = 1923830040822404450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49310 + ... + 66279.

It is an arithmetic number, because the mean of its divisors is an integer number (147203865).

Almost surely, 2^980772665 is an apocalyptic number.

It is an amenable number.

980772665 is a deficient number, since it is larger than the sum of its proper divisors (196858255).

980772665 is a wasteful number, since it uses less digits than its factorization.

980772665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117291.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 980772665 is about 31317.2901924799. The cubic root of 980772665 is about 993.5493671408.

The spelling of 980772665 in words is "nine hundred eighty million, seven hundred seventy-two thousand, six hundred sixty-five".