662660664 has 32 divisors (see below), whose sum is σ = 1660417920. Its totient is φ = 220384736.

The previous prime is 662660657. The next prime is 662660699. The reversal of 662660664 is 466066266.

It is a happy number.

It is a super-2 number, since 2×662660664² = 878238311225841792, which contains 22 as substring.

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, 20532 + ... + 41795.

It is an arithmetic number, because the mean of its divisors is an integer number (51888060).

Almost surely, 2^662660664 is an apocalyptic number.

It is an amenable number.

662660664 is an abundant number, since it is smaller than the sum of its proper divisors (997757256).

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

662660664 is a wasteful number, since it uses less digits than its factorization.

662660664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62779 (or 62775 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 662660664 is about 25742.1961767057. The cubic root of 662660664 is about 871.8271653360.

The spelling of 662660664 in words is "six hundred sixty-two million, six hundred sixty thousand, six hundred sixty-four".