658667601 has 12 divisors (see below), whose sum is σ = 1007374212. Its totient is φ = 413281536.

The previous prime is 658667591. The next prime is 658667609. The reversal of 658667601 is 106766856.

658667601 is a `hidden beast` number, since 6 + 586 + 6 + 7 + 60 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 573123600 + 85544001 = 23940^2 + 9249^2 .

It is not a de Polignac number, because 658667601 - 2⁷ = 658667473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (658667609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2152356 + ... + 2152661.

It is an arithmetic number, because the mean of its divisors is an integer number (83947851).

Almost surely, 2^658667601 is an apocalyptic number.

It is an amenable number.

658667601 is a deficient number, since it is larger than the sum of its proper divisors (348706611).

658667601 is a wasteful number, since it uses less digits than its factorization.

658667601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305040 (or 4305037 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 658667601 is about 25664.5202760543. The cubic root of 658667601 is about 870.0724830613.

The spelling of 658667601 in words is "six hundred fifty-eight million, six hundred sixty-seven thousand, six hundred one".