674544465 has 48 divisors (see below), whose sum is σ = 1343736576. Its totient is φ = 306633600.

The previous prime is 674544433. The next prime is 674544467. The reversal of 674544465 is 564445476.

674544465 is a `hidden beast` number, since 67 + 4 + 544 + 46 + 5 = 666.

It is not a de Polignac number, because 674544465 - 2⁵ = 674544433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 674544465.

It is not an unprimeable number, because it can be changed into a prime (674544467) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51100 + ... + 62930.

It is an arithmetic number, because the mean of its divisors is an integer number (27994512).

Almost surely, 2^674544465 is an apocalyptic number.

It is an amenable number.

674544465 is a deficient number, since it is larger than the sum of its proper divisors (669192111).

674544465 is a wasteful number, since it uses less digits than its factorization.

674544465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12030 (or 12027 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 45.

The square root of 674544465 is about 25971.9938587703. The cubic root of 674544465 is about 877.0079448458.

The spelling of 674544465 in words is "six hundred seventy-four million, five hundred forty-four thousand, four hundred sixty-five".