647041366 has 8 divisors (see below), whose sum is σ = 971007264. Its totient is φ = 323372280.

The previous prime is 647041361. The next prime is 647041387. The reversal of 647041366 is 663140746.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647041361) 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, 68670 + ... + 77521.

It is an arithmetic number, because the mean of its divisors is an integer number (121375908).

Almost surely, 2^647041366 is an apocalyptic number.

647041366 is a deficient number, since it is larger than the sum of its proper divisors (323965898).

647041366 is a wasteful number, since it uses less digits than its factorization.

647041366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148406.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 647041366 is about 25437.0078035920. The cubic root of 647041366 is about 864.9228064362.

The spelling of 647041366 in words is "six hundred forty-seven million, forty-one thousand, three hundred sixty-six".