655742 has 4 divisors (see below), whose sum is σ = 983616. Its totient is φ = 327870.

The previous prime is 655727. The next prime is 655757. The reversal of 655742 is 247556.

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

It is an interprime number because it is at equal distance from previous prime (655727) and next prime (655757).

It is a congruent number.

It is an unprimeable number.

655742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163934 + ... + 163937.

It is an arithmetic number, because the mean of its divisors is an integer number (245904).

2⁶⁵⁵⁷⁴² is an apocalyptic number.

655742 is a deficient number, since it is larger than the sum of its proper divisors (327874).

655742 is a wasteful number, since it uses less digits than its factorization.

655742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327873.

The product of its digits is 8400, while the sum is 29.

The square root of 655742 is about 809.7789821921. The cubic root of 655742 is about 86.8782372032.

The spelling of 655742 in words is "six hundred fifty-five thousand, seven hundred forty-two".