647134373 has 4 divisors (see below), whose sum is σ = 647201100. Its totient is φ = 647067648.

The previous prime is 647134363. The next prime is 647134379. The reversal of 647134373 is 373431746.

647134373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 328261924 + 318872449 = 18118^2 + 17857^2 .

It is a cyclic number.

It is not a de Polignac number, because 647134373 - 2⁶ = 647134309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647134379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15698 + ... + 39251.

It is an arithmetic number, because the mean of its divisors is an integer number (161800275).

Almost surely, 2^647134373 is an apocalyptic number.

It is an amenable number.

647134373 is a deficient number, since it is larger than the sum of its proper divisors (66727).

647134373 is a wasteful number, since it uses less digits than its factorization.

647134373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66726.

The product of its digits is 127008, while the sum is 38.

The square root of 647134373 is about 25438.8359206942. The cubic root of 647134373 is about 864.9642463532.

The spelling of 647134373 in words is "six hundred forty-seven million, one hundred thirty-four thousand, three hundred seventy-three".