668598147 has 12 divisors (see below), whose sum is σ = 1103717680. Its totient is φ = 382056048.

The previous prime is 668598143. The next prime is 668598157. The reversal of 668598147 is 741895866.

668598147 is a `hidden beast` number, since 6 + 6 + 8 + 598 + 1 + 47 = 666.

It is not a de Polignac number, because 668598147 - 2² = 668598143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 668598093 and 668598102.

It is not an unprimeable number, because it can be changed into a prime (668598143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5306272 + ... + 5306397.

Almost surely, 2^668598147 is an apocalyptic number.

668598147 is a deficient number, since it is larger than the sum of its proper divisors (435119533).

668598147 is a wasteful number, since it uses less digits than its factorization.

668598147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612682 (or 10612679 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 668598147 is about 25857.2648785598. The cubic root of 668598147 is about 874.4233030404.

The spelling of 668598147 in words is "six hundred sixty-eight million, five hundred ninety-eight thousand, one hundred forty-seven".