668477275 has 12 divisors (see below), whose sum is σ = 830309704. Its totient is φ = 533880000.

The previous prime is 668477263. The next prime is 668477297. The reversal of 668477275 is 572774866.

It is not a de Polignac number, because 668477275 - 2¹³ = 668469083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7221 + ... + 37270.

Almost surely, 2^668477275 is an apocalyptic number.

668477275 is a deficient number, since it is larger than the sum of its proper divisors (161832429).

668477275 is a wasteful number, since it uses less digits than its factorization.

668477275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45102 (or 45097 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 52.

The square root of 668477275 is about 25854.9274800762. The cubic root of 668477275 is about 874.3706058840.

The spelling of 668477275 in words is "six hundred sixty-eight million, four hundred seventy-seven thousand, two hundred seventy-five".