980665947 has 40 divisors (see below), whose sum is σ = 1491184640. Its totient is φ = 642161520.

The previous prime is 980665913. The next prime is 980665949. The reversal of 980665947 is 749566089.

It is not a de Polignac number, because 980665947 - 2⁸ = 980665691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 980665893 and 980665902.

It is not an unprimeable number, because it can be changed into a prime (980665949) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2117838 + ... + 2118300.

It is an arithmetic number, because the mean of its divisors is an integer number (37279616).

Almost surely, 2^980665947 is an apocalyptic number.

980665947 is a deficient number, since it is larger than the sum of its proper divisors (510518693).

980665947 is a wasteful number, since it uses less digits than its factorization.

980665947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 980665947 is about 31315.5863269395. The cubic root of 980665947 is about 993.5133297554.

The spelling of 980665947 in words is "nine hundred eighty million, six hundred sixty-five thousand, nine hundred forty-seven".