63469691 has 2 divisors, whose sum is σ = 63469692. Its totient is φ = 63469690.

The previous prime is 63469667. The next prime is 63469697. The reversal of 63469691 is 19696436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63469691 - 2²² = 59275387 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (63469697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31734845 + 31734846.

It is an arithmetic number, because the mean of its divisors is an integer number (31734846).

Almost surely, 2^63469691 is an apocalyptic number.

63469691 is a deficient number, since it is larger than the sum of its proper divisors (1).

63469691 is an equidigital number, since it uses as much as digits as its factorization.

63469691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 63469691 is about 7966.7867424703. The cubic root of 63469691 is about 398.8921239428.

The spelling of 63469691 in words is "sixty-three million, four hundred sixty-nine thousand, six hundred ninety-one".