662917172 has 12 divisors (see below), whose sum is σ = 1166117316. Its totient is φ = 329740800.

The previous prime is 662917147. The next prime is 662917183. The reversal of 662917172 is 271719266.

It can be written as a sum of positive squares in 2 ways, for example, as 472366756 + 190550416 = 21734^2 + 13804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428579 + ... + 430122.

It is an arithmetic number, because the mean of its divisors is an integer number (97176443).

Almost surely, 2^662917172 is an apocalyptic number.

It is an amenable number.

662917172 is a deficient number, since it is larger than the sum of its proper divisors (503200144).

662917172 is a wasteful number, since it uses less digits than its factorization.

662917172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858898 (or 858896 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 662917172 is about 25747.1779424464. The cubic root of 662917172 is about 871.9396421062.

The spelling of 662917172 in words is "six hundred sixty-two million, nine hundred seventeen thousand, one hundred seventy-two".