655768 has 8 divisors (see below), whose sum is σ = 1229580. Its totient is φ = 327880.

The previous prime is 655757. The next prime is 655807. The reversal of 655768 is 867556.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40978 + ... + 40993.

2⁶⁵⁵⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

655768 is a deficient number, since it is larger than the sum of its proper divisors (573812).

655768 is a wasteful number, since it uses less digits than its factorization.

655768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81977 (or 81973 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 655768 is about 809.7950357961. The cubic root of 655768 is about 86.8793854212.

The spelling of 655768 in words is "six hundred fifty-five thousand, seven hundred sixty-eight".