64290331 has 8 divisors (see below), whose sum is σ = 73629440. Its totient is φ = 54989928.

The previous prime is 64290329. The next prime is 64290341. The reversal of 64290331 is 13309246.

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

It is not a de Polignac number, because 64290331 - 2¹ = 64290329 is a prime.

It is a super-2 number, since 2×64290331² = 8266493320179122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64290331.

It is not an unprimeable number, because it can be changed into a prime (64290341) 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 7 ways as a sum of consecutive naturals, for example, 6021 + ... + 12838.

It is an arithmetic number, because the mean of its divisors is an integer number (9203680).

Almost surely, 2^64290331 is an apocalyptic number.

64290331 is a deficient number, since it is larger than the sum of its proper divisors (9339109).

64290331 is a wasteful number, since it uses less digits than its factorization.

64290331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19353.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 64290331 is about 8018.1251549224. The cubic root of 64290331 is about 400.6039439204.

Adding to 64290331 its reverse (13309246), we get a palindrome (77599577).

The spelling of 64290331 in words is "sixty-four million, two hundred ninety thousand, three hundred thirty-one".