64632797 has 2 divisors, whose sum is σ = 64632798. Its totient is φ = 64632796.

The previous prime is 64632787. The next prime is 64632817. The reversal of 64632797 is 79723646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54257956 + 10374841 = 7366^2 + 3221^2 .

It is a cyclic number.

It is not a de Polignac number, because 64632797 - 2⁴ = 64632781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64632707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32316398 + 32316399.

It is an arithmetic number, because the mean of its divisors is an integer number (32316399).

Almost surely, 2^64632797 is an apocalyptic number.

It is an amenable number.

64632797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64632797 is an equidigital number, since it uses as much as digits as its factorization.

64632797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The square root of 64632797 is about 8039.4525311118. The cubic root of 64632797 is about 401.3140058284.

The spelling of 64632797 in words is "sixty-four million, six hundred thirty-two thousand, seven hundred ninety-seven".