647345373 has 8 divisors (see below), whose sum is σ = 900654528. Its totient is φ = 412799904.

The previous prime is 647345323. The next prime is 647345401. The reversal of 647345373 is 373543746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 647345373 - 2⁹ = 647344861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647345323) 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 7 ways as a sum of consecutive naturals, for example, 4690840 + ... + 4690977.

It is an arithmetic number, because the mean of its divisors is an integer number (112581816).

Almost surely, 2^647345373 is an apocalyptic number.

It is an amenable number.

647345373 is a deficient number, since it is larger than the sum of its proper divisors (253309155).

647345373 is a wasteful number, since it uses less digits than its factorization.

647345373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9381843.

The product of its digits is 635040, while the sum is 42.

The square root of 647345373 is about 25442.9827850431. The cubic root of 647345373 is about 865.0582441541.

It can be divided in two parts, 64734 and 5373, that added together give a palindrome (70107).

The spelling of 647345373 in words is "six hundred forty-seven million, three hundred forty-five thousand, three hundred seventy-three".