64237393 has 8 divisors (see below), whose sum is σ = 70256736. Its totient is φ = 58248000.

The previous prime is 64237387. The next prime is 64237417. The reversal of 64237393 is 39373246.

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

It is a cyclic number.

It is not a de Polignac number, because 64237393 - 2¹⁷ = 64106321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64237333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871 + ... + 11692.

It is an arithmetic number, because the mean of its divisors is an integer number (8782092).

Almost surely, 2^64237393 is an apocalyptic number.

It is an amenable number.

64237393 is a deficient number, since it is larger than the sum of its proper divisors (6019343).

64237393 is a wasteful number, since it uses less digits than its factorization.

64237393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14975.

The product of its digits is 81648, while the sum is 37.

The square root of 64237393 is about 8014.8233293068. The cubic root of 64237393 is about 400.4939585114.

The spelling of 64237393 in words is "sixty-four million, two hundred thirty-seven thousand, three hundred ninety-three".