656298406 has 4 divisors (see below), whose sum is σ = 984447612. Its totient is φ = 328149202.

The previous prime is 656298403. The next prime is 656298407. The reversal of 656298406 is 604892656.

656298406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656298403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164074600 + ... + 164074603.

It is an arithmetic number, because the mean of its divisors is an integer number (246111903).

Almost surely, 2^656298406 is an apocalyptic number.

656298406 is a deficient number, since it is larger than the sum of its proper divisors (328149206).

656298406 is a wasteful number, since it uses less digits than its factorization.

656298406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328149205.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 656298406 is about 25618.3216858560. The cubic root of 656298406 is about 869.0280271148.

The spelling of 656298406 in words is "six hundred fifty-six million, two hundred ninety-eight thousand, four hundred six".