64252390 has 8 divisors (see below), whose sum is σ = 115654320. Its totient is φ = 25700952.

The previous prime is 64252381. The next prime is 64252399. The reversal of 64252390 is 9325246.

It is an interprime number because it is at equal distance from previous prime (64252381) and next prime (64252399).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64252399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3212610 + ... + 3212629.

It is an arithmetic number, because the mean of its divisors is an integer number (14456790).

Almost surely, 2^64252390 is an apocalyptic number.

64252390 is a deficient number, since it is larger than the sum of its proper divisors (51401930).

64252390 is a wasteful number, since it uses less digits than its factorization.

64252390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425246.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 64252390 is about 8015.7588536582. The cubic root of 64252390 is about 400.5251228134.

The spelling of 64252390 in words is "sixty-four million, two hundred fifty-two thousand, three hundred ninety".