675999864 has 32 divisors (see below), whose sum is σ = 1877778000. Its totient is φ = 225333216.

The previous prime is 675999853. The next prime is 675999869. The reversal of 675999864 is 468999576.

It is a happy number.

It is a super-2 number, since 2×675999864² = 913951632256036992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675999869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564599 + ... + 1565030.

Almost surely, 2^675999864 is an apocalyptic number.

It is an amenable number.

675999864 is an abundant number, since it is smaller than the sum of its proper divisors (1201778136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

675999864 is a wasteful number, since it uses less digits than its factorization.

675999864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129644 (or 3129634 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The square root of 675999864 is about 25999.9973846153. The cubic root of 675999864 is about 877.6382366775.

The spelling of 675999864 in words is "six hundred seventy-five million, nine hundred ninety-nine thousand, eight hundred sixty-four".