674128345 has 32 divisors (see below), whose sum is σ = 937681920. Its totient is φ = 460535040.

The previous prime is 674128337. The next prime is 674128373. The reversal of 674128345 is 543821476.

It is not a de Polignac number, because 674128345 - 2³ = 674128337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 674128298 and 674128307.

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, 53304 + ... + 64726.

It is an arithmetic number, because the mean of its divisors is an integer number (29302560).

Almost surely, 2^674128345 is an apocalyptic number.

It is an amenable number.

674128345 is a deficient number, since it is larger than the sum of its proper divisors (263553575).

674128345 is a wasteful number, since it uses less digits than its factorization.

674128345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11505.

The product of its digits is 161280, while the sum is 40.

The square root of 674128345 is about 25963.9816861744. The cubic root of 674128345 is about 876.8275684914.

It can be divided in two parts, 67412 and 8345, that added together give a palindrome (75757).

The spelling of 674128345 in words is "six hundred seventy-four million, one hundred twenty-eight thousand, three hundred forty-five".