64338290 has 32 divisors (see below), whose sum is σ = 118727856. Its totient is φ = 25093120.

The previous prime is 64338289. The next prime is 64338293. The reversal of 64338290 is 9283346.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18139081 + 46199209 = 4259^2 + 6797^2 .

It is a super-3 number, since 3×64338290³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64338290.

It is not an unprimeable number, because it can be changed into a prime (64338293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123230 + ... + 123750.

Almost surely, 2^64338290 is an apocalyptic number.

64338290 is a deficient number, since it is larger than the sum of its proper divisors (54389566).

64338290 is a wasteful number, since it uses less digits than its factorization.

64338290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 64338290 is about 8021.1152591145. The cubic root of 64338290 is about 400.7035327122.

The spelling of 64338290 in words is "sixty-four million, three hundred thirty-eight thousand, two hundred ninety".