63641597 has 2 divisors, whose sum is σ = 63641598. Its totient is φ = 63641596.

The previous prime is 63641579. The next prime is 63641629. The reversal of 63641597 is 79514636.

Together with previous prime (63641579) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63138916 + 502681 = 7946^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 63641597 - 2¹⁰ = 63640573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63641527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31820798 + 31820799.

It is an arithmetic number, because the mean of its divisors is an integer number (31820799).

Almost surely, 2^63641597 is an apocalyptic number.

It is an amenable number.

63641597 is a deficient number, since it is larger than the sum of its proper divisors (1).

63641597 is an equidigital number, since it uses as much as digits as its factorization.

63641597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 63641597 is about 7977.5683638562. The cubic root of 63641597 is about 399.2519289297.

The spelling of 63641597 in words is "sixty-three million, six hundred forty-one thousand, five hundred ninety-seven".