656351 has 4 divisors (see below), whose sum is σ = 684912. Its totient is φ = 627792.

The previous prime is 656347. The next prime is 656371. The reversal of 656351 is 153656.

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

It is a cyclic number.

It is not a de Polignac number, because 656351 - 2² = 656347 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 656351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14246 + ... + 14291.

It is an arithmetic number, because the mean of its divisors is an integer number (171228).

2⁶⁵⁶³⁵¹ is an apocalyptic number.

656351 is a deficient number, since it is larger than the sum of its proper divisors (28561).

656351 is a wasteful number, since it uses less digits than its factorization.

656351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28560.

The product of its digits is 2700, while the sum is 26.

The square root of 656351 is about 810.1549234560. The cubic root of 656351 is about 86.9051240356.

The spelling of 656351 in words is "six hundred fifty-six thousand, three hundred fifty-one".