655738 has 4 divisors (see below), whose sum is σ = 983610. Its totient is φ = 327868.

The previous prime is 655727. The next prime is 655757. The reversal of 655738 is 837556.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 4489 = 807^2 + 67^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163933 + ... + 163936.

2⁶⁵⁵⁷³⁸ is an apocalyptic number.

655738 is a deficient number, since it is larger than the sum of its proper divisors (327872).

655738 is a wasteful number, since it uses less digits than its factorization.

655738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327871.

The product of its digits is 25200, while the sum is 34.

The square root of 655738 is about 809.7765123786. The cubic root of 655738 is about 86.8780605516.

The spelling of 655738 in words is "six hundred fifty-five thousand, seven hundred thirty-eight".