675808631 has 4 divisors (see below), whose sum is σ = 675976512. Its totient is φ = 675640752.

The previous prime is 675808621. The next prime is 675808643. The reversal of 675808631 is 136808576.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-675808631 is a prime.

It is a super-2 number, since 2×675808631² = 913434611468188322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675808621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77750 + ... + 86003.

It is an arithmetic number, because the mean of its divisors is an integer number (168994128).

Almost surely, 2^675808631 is an apocalyptic number.

675808631 is a deficient number, since it is larger than the sum of its proper divisors (167881).

675808631 is a wasteful number, since it uses less digits than its factorization.

675808631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167880.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 675808631 is about 25996.3195664309. The cubic root of 675808631 is about 877.5554707725. Note that the first 3 decimals are identical.

The spelling of 675808631 in words is "six hundred seventy-five million, eight hundred eight thousand, six hundred thirty-one".