656342147 has 2 divisors, whose sum is σ = 656342148. Its totient is φ = 656342146.

The previous prime is 656342119. The next prime is 656342161. The reversal of 656342147 is 741243656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656342147 - 2²² = 652147843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656342147.

It is not a weakly prime, because it can be changed into another prime (656342107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328171073 + 328171074.

It is an arithmetic number, because the mean of its divisors is an integer number (328171074).

Almost surely, 2^656342147 is an apocalyptic number.

656342147 is a deficient number, since it is larger than the sum of its proper divisors (1).

656342147 is an equidigital number, since it uses as much as digits as its factorization.

656342147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 656342147 is about 25619.1753770491. The cubic root of 656342147 is about 869.0473330231.

The spelling of 656342147 in words is "six hundred fifty-six million, three hundred forty-two thousand, one hundred forty-seven".