656403067 has 4 divisors (see below), whose sum is σ = 656531176. Its totient is φ = 656274960.

The previous prime is 656403061. The next prime is 656403073. The reversal of 656403067 is 760304656.

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 (656403061) and next prime (656403073).

It is a cyclic number.

It is not a de Polignac number, because 656403067 - 2²³ = 648014459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656403061) 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, 56034 + ... + 66727.

It is an arithmetic number, because the mean of its divisors is an integer number (164132794).

Almost surely, 2^656403067 is an apocalyptic number.

656403067 is a deficient number, since it is larger than the sum of its proper divisors (128109).

656403067 is a wasteful number, since it uses less digits than its factorization.

656403067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128108.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 656403067 is about 25620.3643026402. The cubic root of 656403067 is about 869.0742197751.

The spelling of 656403067 in words is "six hundred fifty-six million, four hundred three thousand, sixty-seven".