675911621 has 16 divisors (see below), whose sum is σ = 843264000. Its totient is φ = 526328880.

The previous prime is 675911563. The next prime is 675911629. The reversal of 675911621 is 126119576.

It is not a de Polignac number, because 675911621 - 2¹⁰ = 675910597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675911629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223880 + ... + 226878.

It is an arithmetic number, because the mean of its divisors is an integer number (52704000).

Almost surely, 2^675911621 is an apocalyptic number.

It is an amenable number.

675911621 is a deficient number, since it is larger than the sum of its proper divisors (167352379).

675911621 is a wasteful number, since it uses less digits than its factorization.

675911621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944.

The product of its digits is 22680, while the sum is 38.

The square root of 675911621 is about 25998.3003482920. The cubic root of 675911621 is about 877.6000469257.

The spelling of 675911621 in words is "six hundred seventy-five million, nine hundred eleven thousand, six hundred twenty-one".