664252627 has 8 divisors (see below), whose sum is σ = 717035040. Its totient is φ = 613462080.

The previous prime is 664252613. The next prime is 664252643. The reversal of 664252627 is 726252466.

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 664252627 - 2²³ = 655864019 is a prime.

It is a super-2 number, since 2×664252627² = 882463104952802258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664252627.

It is not an unprimeable number, because it can be changed into a prime (664232627) 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, 497274 + ... + 498607.

It is an arithmetic number, because the mean of its divisors is an integer number (89629380).

Almost surely, 2^664252627 is an apocalyptic number.

664252627 is a deficient number, since it is larger than the sum of its proper divisors (52782413).

664252627 is a wasteful number, since it uses less digits than its factorization.

664252627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995933.

The product of its digits is 241920, while the sum is 40.

The square root of 664252627 is about 25773.0989017619. The cubic root of 664252627 is about 872.5247605062.

The spelling of 664252627 in words is "six hundred sixty-four million, two hundred fifty-two thousand, six hundred twenty-seven".