655437 has 4 divisors (see below), whose sum is σ = 873920. Its totient is φ = 436956.

The previous prime is 655399. The next prime is 655439. The reversal of 655437 is 734556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 655437 - 2⁶ = 655373 is a prime.

It is a D-number.

It is a Duffinian number.

655437 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109237 + ... + 109242.

It is an arithmetic number, because the mean of its divisors is an integer number (218480).

2⁶⁵⁵⁴³⁷ is an apocalyptic number.

It is an amenable number.

655437 is a deficient number, since it is larger than the sum of its proper divisors (218483).

655437 is a wasteful number, since it uses less digits than its factorization.

655437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218482.

The product of its digits is 12600, while the sum is 30.

The square root of 655437 is about 809.5906372976. The cubic root of 655437 is about 86.8647654558.

The spelling of 655437 in words is "six hundred fifty-five thousand, four hundred thirty-seven".