976680491 has 2 divisors, whose sum is σ = 976680492. Its totient is φ = 976680490.

The previous prime is 976680479. The next prime is 976680517. The reversal of 976680491 is 194086679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 976680491 - 2¹⁸ = 976418347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (976682491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488340245 + 488340246.

It is an arithmetic number, because the mean of its divisors is an integer number (488340246).

Almost surely, 2^976680491 is an apocalyptic number.

976680491 is a deficient number, since it is larger than the sum of its proper divisors (1).

976680491 is an equidigital number, since it uses as much as digits as its factorization.

976680491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 976680491 is about 31251.8877989794. The cubic root of 976680491 is about 992.1656129990.

The spelling of 976680491 in words is "nine hundred seventy-six million, six hundred eighty thousand, four hundred ninety-one".