656146137 has 8 divisors (see below), whose sum is σ = 874990720. Its totient is φ = 437366160.

The previous prime is 656146129. The next prime is 656146157. The reversal of 656146137 is 731641656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 656146137 - 2³ = 656146129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656146095 and 656146104.

It is not an unprimeable number, because it can be changed into a prime (656146157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17664 + ... + 40302.

It is an arithmetic number, because the mean of its divisors is an integer number (109373840).

Almost surely, 2^656146137 is an apocalyptic number.

It is an amenable number.

656146137 is a deficient number, since it is larger than the sum of its proper divisors (218844583).

656146137 is a wasteful number, since it uses less digits than its factorization.

656146137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32303.

The product of its digits is 90720, while the sum is 39.

The square root of 656146137 is about 25615.3496364973. The cubic root of 656146137 is about 868.9608136529.

The spelling of 656146137 in words is "six hundred fifty-six million, one hundred forty-six thousand, one hundred thirty-seven".