64197373 has 4 divisors (see below), whose sum is σ = 66268288. Its totient is φ = 62126460.

The previous prime is 64197337. The next prime is 64197407. The reversal of 64197373 is 37379146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64197373 - 2⁹ = 64196861 is a prime.

It is a super-2 number, since 2×64197373² = 8242605400202258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64197473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035411 + ... + 1035472.

It is an arithmetic number, because the mean of its divisors is an integer number (16567072).

Almost surely, 2^64197373 is an apocalyptic number.

It is an amenable number.

64197373 is a deficient number, since it is larger than the sum of its proper divisors (2070915).

64197373 is a wasteful number, since it uses less digits than its factorization.

64197373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070914.

The product of its digits is 95256, while the sum is 40.

The square root of 64197373 is about 8012.3263163703. The cubic root of 64197373 is about 400.4107717720.

The spelling of 64197373 in words is "sixty-four million, one hundred ninety-seven thousand, three hundred seventy-three".