64630793 has 2 divisors, whose sum is σ = 64630794. Its totient is φ = 64630792.

The previous prime is 64630757. The next prime is 64630831. The reversal of 64630793 is 39703646.

It is a happy number.

It is an a-pointer prime, because the next prime (64630831) can be obtained adding 64630793 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63808144 + 822649 = 7988^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 64630793 - 2¹⁰ = 64629769 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64630733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32315396 + 32315397.

It is an arithmetic number, because the mean of its divisors is an integer number (32315397).

Almost surely, 2^64630793 is an apocalyptic number.

It is an amenable number.

64630793 is a deficient number, since it is larger than the sum of its proper divisors (1).

64630793 is an equidigital number, since it uses as much as digits as its factorization.

64630793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 64630793 is about 8039.3278947932. The cubic root of 64630793 is about 401.3098580809.

It can be divided in two parts, 646 and 30793, that multiplied together give a triangular number (19892278 = T₆₃₀₇).

The spelling of 64630793 in words is "sixty-four million, six hundred thirty thousand, seven hundred ninety-three".