647070677 has 8 divisors (see below), whose sum is σ = 747418752. Its totient is φ = 553643200.

The previous prime is 647070659. The next prime is 647070703. The reversal of 647070677 is 776070746.

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

It is not a de Polignac number, because 647070677 - 2⁸ = 647070421 is a prime.

It is a super-2 number, since 2×647070677² = 837400922066476658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647070637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729949 + ... + 1730322.

It is an arithmetic number, because the mean of its divisors is an integer number (93427344).

Almost surely, 2^647070677 is an apocalyptic number.

It is an amenable number.

647070677 is a deficient number, since it is larger than the sum of its proper divisors (100348075).

647070677 is a wasteful number, since it uses less digits than its factorization.

647070677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460299.

The product of its (nonzero) digits is 345744, while the sum is 44.

The square root of 647070677 is about 25437.5839458074. The cubic root of 647070677 is about 864.9358665850.

The spelling of 647070677 in words is "six hundred forty-seven million, seventy thousand, six hundred seventy-seven".