64372538 has 8 divisors (see below), whose sum is σ = 100757088. Its totient is φ = 30786844.

The previous prime is 64372537. The next prime is 64372571. The reversal of 64372538 is 83527346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64372538² = 8287647297122888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64372537) 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, 699656 + ... + 699747.

It is an arithmetic number, because the mean of its divisors is an integer number (12594636).

Almost surely, 2^64372538 is an apocalyptic number.

64372538 is a deficient number, since it is larger than the sum of its proper divisors (36384550).

64372538 is a wasteful number, since it uses less digits than its factorization.

64372538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399428.

The product of its digits is 120960, while the sum is 38.

The square root of 64372538 is about 8023.2498403079. The cubic root of 64372538 is about 400.7746197755.

The spelling of 64372538 in words is "sixty-four million, three hundred seventy-two thousand, five hundred thirty-eight".