674923643 has 16 divisors (see below), whose sum is σ = 718218240. Its totient is φ = 632448000.

The previous prime is 674923637. The next prime is 674923687. The reversal of 674923643 is 346329476.

It is a cyclic number.

It is not a de Polignac number, because 674923643 - 2⁸ = 674923387 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 674923594 and 674923603.

It is not an unprimeable number, because it can be changed into a prime (674923693) 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, 1052603 + ... + 1053243.

It is an arithmetic number, because the mean of its divisors is an integer number (44888640).

Almost surely, 2^674923643 is an apocalyptic number.

674923643 is a deficient number, since it is larger than the sum of its proper divisors (43294597).

674923643 is a wasteful number, since it uses less digits than its factorization.

674923643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178.

The product of its digits is 653184, while the sum is 44.

The square root of 674923643 is about 25979.2925808229. The cubic root of 674923643 is about 877.1722432947.

The spelling of 674923643 in words is "six hundred seventy-four million, nine hundred twenty-three thousand, six hundred forty-three".