656897146 has 16 divisors (see below), whose sum is σ = 1042947360. Its totient is φ = 309439440.

The previous prime is 656897117. The next prime is 656897147. The reversal of 656897146 is 641798656.

It is a junction number, because it is equal to n+sod(n) for n = 656897093 and 656897102.

It is not an unprimeable number, because it can be changed into a prime (656897147) 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 in 7 ways as a sum of consecutive naturals, for example, 40876 + ... + 54631.

It is an arithmetic number, because the mean of its divisors is an integer number (65184210).

Almost surely, 2^656897146 is an apocalyptic number.

656897146 is a deficient number, since it is larger than the sum of its proper divisors (386050214).

656897146 is a wasteful number, since it uses less digits than its factorization.

656897146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95709.

The product of its digits is 2177280, while the sum is 52.

The square root of 656897146 is about 25630.0047990631. The cubic root of 656897146 is about 869.2922177567.

The spelling of 656897146 in words is "six hundred fifty-six million, eight hundred ninety-seven thousand, one hundred forty-six".