976630561 has 2 divisors, whose sum is σ = 976630562. Its totient is φ = 976630560.

The previous prime is 976630547. The next prime is 976630621. The reversal of 976630561 is 165036679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 944640225 + 31990336 = 30735^2 + 5656^2 .

It is a cyclic number.

It is not a de Polignac number, because 976630561 - 2¹³ = 976622369 is a prime.

It is not a weakly prime, because it can be changed into another prime (976630511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488315280 + 488315281.

It is an arithmetic number, because the mean of its divisors is an integer number (488315281).

Almost surely, 2^976630561 is an apocalyptic number.

It is an amenable number.

976630561 is a deficient number, since it is larger than the sum of its proper divisors (1).

976630561 is an equidigital number, since it uses as much as digits as its factorization.

976630561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 976630561 is about 31251.0889570268. The cubic root of 976630561 is about 992.1487055000.

The spelling of 976630561 in words is "nine hundred seventy-six million, six hundred thirty thousand, five hundred sixty-one".