647672154 has 16 divisors (see below), whose sum is σ = 1371541248. Its totient is φ = 203191232.

The previous prime is 647672147. The next prime is 647672213. The reversal of 647672154 is 451276746.

647672154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3174762 + ... + 3174965.

It is an arithmetic number, because the mean of its divisors is an integer number (85721328).

Almost surely, 2^647672154 is an apocalyptic number.

647672154 is an abundant number, since it is smaller than the sum of its proper divisors (723869094).

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

647672154 is a wasteful number, since it uses less digits than its factorization.

647672154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349749.

The product of its digits is 282240, while the sum is 42.

The square root of 647672154 is about 25449.4038044116. The cubic root of 647672154 is about 865.2037806053.

The spelling of 647672154 in words is "six hundred forty-seven million, six hundred seventy-two thousand, one hundred fifty-four".