656606061 has 8 divisors (see below), whose sum is σ = 972749760. Its totient is φ = 437737356.

The previous prime is 656606053. The next prime is 656606077. The reversal of 656606061 is 160606656.

It is not a de Polignac number, because 656606061 - 2³ = 656606053 is a prime.

It is a super-2 number, since 2×656606061² = 862263038683871442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656606761) 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, 12159345 + ... + 12159398.

It is an arithmetic number, because the mean of its divisors is an integer number (121593720).

Almost surely, 2^656606061 is an apocalyptic number.

It is an amenable number.

656606061 is a deficient number, since it is larger than the sum of its proper divisors (316143699).

656606061 is a wasteful number, since it uses less digits than its factorization.

656606061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24318752 (or 24318746 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 656606061 is about 25624.3255716126. The cubic root of 656606061 is about 869.1637982056.

The spelling of 656606061 in words is "six hundred fifty-six million, six hundred six thousand, sixty-one".