626673641 has 24 divisors (see below), whose sum is σ = 703836000. Its totient is φ = 557441280.

The previous prime is 626673629. The next prime is 626673659. The reversal of 626673641 is 146376626.

It is a de Polignac number, because none of the positive numbers 2^k-626673641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (626673661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255610 + ... + 1256108.

It is an arithmetic number, because the mean of its divisors is an integer number (29326500).

Almost surely, 2^626673641 is an apocalyptic number.

It is an amenable number.

626673641 is a deficient number, since it is larger than the sum of its proper divisors (77162359).

626673641 is a wasteful number, since it uses less digits than its factorization.

626673641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 714 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 626673641 is about 25033.4504413595. The cubic root of 626673641 is about 855.7504626992.

The spelling of 626673641 in words is "six hundred twenty-six million, six hundred seventy-three thousand, six hundred forty-one".