674155420 has 24 divisors (see below), whose sum is σ = 1431637200. Its totient is φ = 266631552.

The previous prime is 674155411. The next prime is 674155423. The reversal of 674155420 is 24551476.

674155420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674155423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187590 + ... + 191149.

It is an arithmetic number, because the mean of its divisors is an integer number (59651550).

Almost surely, 2^674155420 is an apocalyptic number.

It is an amenable number.

674155420 is an abundant number, since it is smaller than the sum of its proper divisors (757481780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

674155420 is a wasteful number, since it uses less digits than its factorization.

674155420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378837 (or 378835 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 674155420 is about 25964.5030763156. The cubic root of 674155420 is about 876.8393070022.

The spelling of 674155420 in words is "six hundred seventy-four million, one hundred fifty-five thousand, four hundred twenty".