664874147 has 8 divisors (see below), whose sum is σ = 763205376. Its totient is φ = 567380232.

The previous prime is 664874141. The next prime is 664874153. The reversal of 664874147 is 741478466.

It is an interprime number because it is at equal distance from previous prime (664874141) and next prime (664874153).

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

It is a cyclic number.

It is not a de Polignac number, because 664874147 - 2²⁴ = 648096931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664874141) 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, 207623 + ... + 210800.

It is an arithmetic number, because the mean of its divisors is an integer number (95400672).

Almost surely, 2^664874147 is an apocalyptic number.

664874147 is a deficient number, since it is larger than the sum of its proper divisors (98331229).

664874147 is a wasteful number, since it uses less digits than its factorization.

664874147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418657.

The product of its digits is 903168, while the sum is 47.

The square root of 664874147 is about 25785.1536159861. The cubic root of 664874147 is about 872.7968068733.

The spelling of 664874147 in words is "six hundred sixty-four million, eight hundred seventy-four thousand, one hundred forty-seven".