170664056 has 8 divisors (see below), whose sum is σ = 319995120. Its totient is φ = 85332024.

The previous prime is 170664047. The next prime is 170664059. The reversal of 170664056 is 650466071.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×170664056² = 58252440020742272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170664059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666496 + ... + 10666511.

It is an arithmetic number, because the mean of its divisors is an integer number (39999390).

Almost surely, 2^170664056 is an apocalyptic number.

It is an amenable number.

170664056 is a deficient number, since it is larger than the sum of its proper divisors (149331064).

170664056 is a wasteful number, since it uses less digits than its factorization.

170664056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21333013 (or 21333009 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 170664056 is about 13063.8453756924. The cubic root of 170664056 is about 554.6861911299.

The spelling of 170664056 in words is "one hundred seventy million, six hundred sixty-four thousand, fifty-six".