656349 has 4 divisors (see below), whose sum is σ = 875136. Its totient is φ = 437564.

The previous prime is 656347. The next prime is 656371. The reversal of 656349 is 943656.

It is a happy number.

656349 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 656349 - 2¹ = 656347 is a prime.

It is a d-powerful number, because it can be written as 6² + 5⁷ + 3³ + 6⁶ + 4³ + 9⁶ .

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

656349 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656347) 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, 109389 + ... + 109394.

It is an arithmetic number, because the mean of its divisors is an integer number (218784).

2⁶⁵⁶³⁴⁹ is an apocalyptic number.

It is an amenable number.

656349 is a deficient number, since it is larger than the sum of its proper divisors (218787).

656349 is a wasteful number, since it uses less digits than its factorization.

656349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218786.

The product of its digits is 19440, while the sum is 33.

The square root of 656349 is about 810.1536891232. The cubic root of 656349 is about 86.9050357645.

The spelling of 656349 in words is "six hundred fifty-six thousand, three hundred forty-nine".