647226886 has 8 divisors (see below), whose sum is σ = 975442104. Its totient is φ = 322079520.

The previous prime is 647226863. The next prime is 647226889. The reversal of 647226886 is 688622746.

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

It is a super-2 number, since 2×647226886² = 837805283922513992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647226889) 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, 766435 + ... + 767278.

It is an arithmetic number, because the mean of its divisors is an integer number (121930263).

Almost surely, 2^647226886 is an apocalyptic number.

647226886 is a deficient number, since it is larger than the sum of its proper divisors (328215218).

647226886 is a wasteful number, since it uses less digits than its factorization.

647226886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533926.

The product of its digits is 1548288, while the sum is 49.

The square root of 647226886 is about 25440.6541975634. The cubic root of 647226886 is about 865.0054622262.

The spelling of 647226886 in words is "six hundred forty-seven million, two hundred twenty-six thousand, eight hundred eighty-six".