674538645 has 32 divisors (see below), whose sum is σ = 1185321600. Its totient is φ = 324842240.

The previous prime is 674538643. The next prime is 674538649. The reversal of 674538645 is 546835476.

It is not a de Polignac number, because 674538645 - 2¹ = 674538643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 674538594 and 674538603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674538643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10867 + ... + 38303.

It is an arithmetic number, because the mean of its divisors is an integer number (37041300).

Almost surely, 2^674538645 is an apocalyptic number.

It is an amenable number.

674538645 is a deficient number, since it is larger than the sum of its proper divisors (510782955).

674538645 is a wasteful number, since it uses less digits than its factorization.

674538645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27605.

The product of its digits is 2419200, while the sum is 48.

The square root of 674538645 is about 25971.8818147627. The cubic root of 674538645 is about 877.0054225505.

The spelling of 674538645 in words is "six hundred seventy-four million, five hundred thirty-eight thousand, six hundred forty-five".