64631101 has 2 divisors, whose sum is σ = 64631102. Its totient is φ = 64631100.

The previous prime is 64631071. The next prime is 64631113. The reversal of 64631101 is 10113646.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61638201 + 2992900 = 7851^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 64631101 - 2⁵ = 64631069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64631701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32315550 + 32315551.

It is an arithmetic number, because the mean of its divisors is an integer number (32315551).

Almost surely, 2^64631101 is an apocalyptic number.

It is an amenable number.

64631101 is a deficient number, since it is larger than the sum of its proper divisors (1).

64631101 is an equidigital number, since it uses as much as digits as its factorization.

64631101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 64631101 is about 8039.3470506006. The cubic root of 64631101 is about 401.3104955646.

Adding to 64631101 its reverse (10113646), we get a palindrome (74744747).

The spelling of 64631101 in words is "sixty-four million, six hundred thirty-one thousand, one hundred one".