673670645 has 32 divisors (see below), whose sum is σ = 874644480. Its totient is φ = 496281600.

The previous prime is 673670639. The next prime is 673670659. The reversal of 673670645 is 546076376.

It is not a de Polignac number, because 673670645 - 2⁴ = 673670629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 673670596 and 673670605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 936596 + ... + 937314.

It is an arithmetic number, because the mean of its divisors is an integer number (27332640).

Almost surely, 2^673670645 is an apocalyptic number.

It is an amenable number.

673670645 is a deficient number, since it is larger than the sum of its proper divisors (200973835).

673670645 is a wasteful number, since it uses less digits than its factorization.

673670645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 673670645 is about 25955.1660561053. The cubic root of 673670645 is about 876.6290826285.

The spelling of 673670645 in words is "six hundred seventy-three million, six hundred seventy thousand, six hundred forty-five".