63901967 has 2 divisors, whose sum is σ = 63901968. Its totient is φ = 63901966.

The previous prime is 63901939. The next prime is 63901973. The reversal of 63901967 is 76910936.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63901967 - 2¹⁴ = 63885583 is a prime.

It is a super-2 number, since 2×63901967² = 8166922772938178, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63901907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31950983 + 31950984.

It is an arithmetic number, because the mean of its divisors is an integer number (31950984).

Almost surely, 2^63901967 is an apocalyptic number.

63901967 is a deficient number, since it is larger than the sum of its proper divisors (1).

63901967 is an equidigital number, since it uses as much as digits as its factorization.

63901967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 63901967 is about 7993.8705893954. The cubic root of 63901967 is about 399.7956602142.

The spelling of 63901967 in words is "sixty-three million, nine hundred one thousand, nine hundred sixty-seven".