669552075 has 30 divisors (see below), whose sum is σ = 1240245644. Its totient is φ = 357093360.

The previous prime is 669552067. The next prime is 669552133. The reversal of 669552075 is 570255966.

It is not a de Polignac number, because 669552075 - 2³ = 669552067 is a prime.

It is a super-2 number, since 2×669552075² = 896599962273611250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 669552075.

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 29 ways as a sum of consecutive naturals, for example, 163297 + ... + 167346.

Almost surely, 2^669552075 is an apocalyptic number.

669552075 is a deficient number, since it is larger than the sum of its proper divisors (570693569).

669552075 is a wasteful number, since it uses less digits than its factorization.

669552075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330665 (or 330651 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 669552075 is about 25875.7043382398. The cubic root of 669552075 is about 874.8389690059.

The spelling of 669552075 in words is "six hundred sixty-nine million, five hundred fifty-two thousand, seventy-five".