664170036 has 24 divisors (see below), whose sum is σ = 1554421344. Its totient is φ = 220719840.

The previous prime is 664170007. The next prime is 664170049. The reversal of 664170036 is 630071466.

It is a super-2 number, since 2×664170036² = 882243673440482592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664169979 and 664170006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79635 + ... + 87578.

It is an arithmetic number, because the mean of its divisors is an integer number (64767556).

Almost surely, 2^664170036 is an apocalyptic number.

It is an amenable number.

664170036 is an abundant number, since it is smaller than the sum of its proper divisors (890251308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664170036 is a wasteful number, since it uses less digits than its factorization.

664170036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167551 (or 167549 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 664170036 is about 25771.4965805248. The cubic root of 664170036 is about 872.4885967152.

The spelling of 664170036 in words is "six hundred sixty-four million, one hundred seventy thousand, thirty-six".