64372493 has 2 divisors, whose sum is σ = 64372494. Its totient is φ = 64372492.

The previous prime is 64372487. The next prime is 64372537. The reversal of 64372493 is 39427346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44328964 + 20043529 = 6658^2 + 4477^2 .

It is a cyclic number.

It is not a de Polignac number, because 64372493 - 2¹² = 64368397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64372403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32186246 + 32186247.

It is an arithmetic number, because the mean of its divisors is an integer number (32186247).

Almost surely, 2^64372493 is an apocalyptic number.

It is an amenable number.

64372493 is a deficient number, since it is larger than the sum of its proper divisors (1).

64372493 is an equidigital number, since it uses as much as digits as its factorization.

64372493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 64372493 is about 8023.2470359574. The cubic root of 64372493 is about 400.7745263875.

The spelling of 64372493 in words is "sixty-four million, three hundred seventy-two thousand, four hundred ninety-three".