664375336 has 16 divisors (see below), whose sum is σ = 1262769300. Its totient is φ = 327636864.

The previous prime is 664375333. The next prime is 664375343. The reversal of 664375336 is 633573466.

It can be written as a sum of positive squares in 2 ways, for example, as 646684900 + 17690436 = 25430^2 + 4206^2 .

It is a super-2 number, since 2×664375336² = 882789174170225792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664375292 and 664375301.

It is not an unprimeable number, because it can be changed into a prime (664375331) 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, 568231 + ... + 569398.

Almost surely, 2^664375336 is an apocalyptic number.

It is an amenable number.

664375336 is a deficient number, since it is larger than the sum of its proper divisors (598393964).

664375336 is a wasteful number, since it uses less digits than its factorization.

664375336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137708 (or 1137704 counting only the distinct ones).

The product of its digits is 816480, while the sum is 43.

The square root of 664375336 is about 25775.4793553874. The cubic root of 664375336 is about 872.5784850703.

The spelling of 664375336 in words is "six hundred sixty-four million, three hundred seventy-five thousand, three hundred thirty-six".