674138878 has 32 divisors (see below), whose sum is σ = 1214092800. Its totient is φ = 274480800.

The previous prime is 674138873. The next prime is 674138887. The reversal of 674138878 is 878831476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674138873) 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, 40953 + ... + 55003.

It is an arithmetic number, because the mean of its divisors is an integer number (37940400).

Almost surely, 2^674138878 is an apocalyptic number.

674138878 is a deficient number, since it is larger than the sum of its proper divisors (539953922).

674138878 is a wasteful number, since it uses less digits than its factorization.

674138878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14232.

The product of its digits is 1806336, while the sum is 52.

The square root of 674138878 is about 25964.1845240708. The cubic root of 674138878 is about 876.8321351671.

The spelling of 674138878 in words is "six hundred seventy-four million, one hundred thirty-eight thousand, eight hundred seventy-eight".