64390246 has 8 divisors (see below), whose sum is σ = 97488360. Its totient is φ = 31894128.

The previous prime is 64390241. The next prime is 64390247. The reversal of 64390246 is 64209346.

64390246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×64390246² = 8292207559881032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64390241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150231 + ... + 150658.

It is an arithmetic number, because the mean of its divisors is an integer number (12186045).

Almost surely, 2^64390246 is an apocalyptic number.

64390246 is a deficient number, since it is larger than the sum of its proper divisors (33098114).

64390246 is a wasteful number, since it uses less digits than its factorization.

64390246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300998.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 64390246 is about 8024.3533072765. The cubic root of 64390246 is about 400.8113656019.

The spelling of 64390246 in words is "sixty-four million, three hundred ninety thousand, two hundred forty-six".