674172159 has 16 divisors (see below), whose sum is σ = 968239104. Its totient is φ = 416037600.

The previous prime is 674172133. The next prime is 674172167. The reversal of 674172159 is 951271476.

It is a happy number.

It is not a de Polignac number, because 674172159 - 2⁹ = 674171647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674172159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674172199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155452 + ... + 159729.

It is an arithmetic number, because the mean of its divisors is an integer number (60514944).

Almost surely, 2^674172159 is an apocalyptic number.

674172159 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

674172159 is a deficient number, since it is larger than the sum of its proper divisors (294066945).

674172159 is a wasteful number, since it uses less digits than its factorization.

674172159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315238.

The product of its digits is 105840, while the sum is 42.

The square root of 674172159 is about 25964.8254182461. The cubic root of 674172159 is about 876.8465641278.

The spelling of 674172159 in words is "six hundred seventy-four million, one hundred seventy-two thousand, one hundred fifty-nine".