63190961 has 2 divisors, whose sum is σ = 63190962. Its totient is φ = 63190960.

The previous prime is 63190957. The next prime is 63190991. The reversal of 63190961 is 16909136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 15649936 = 6895^2 + 3956^2 .

It is a cyclic number.

It is not a de Polignac number, because 63190961 - 2² = 63190957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (63190991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31595480 + 31595481.

It is an arithmetic number, because the mean of its divisors is an integer number (31595481).

Almost surely, 2^63190961 is an apocalyptic number.

It is an amenable number.

63190961 is a deficient number, since it is larger than the sum of its proper divisors (1).

63190961 is an equidigital number, since it uses as much as digits as its factorization.

63190961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 63190961 is about 7949.2742436024. The cubic root of 63190961 is about 398.3073495225.

The spelling of 63190961 in words is "sixty-three million, one hundred ninety thousand, nine hundred sixty-one".