647678272610 has 8 divisors (see below), whose sum is σ = 1165820890716. Its totient is φ = 259071309040.

The previous prime is 647678272567. The next prime is 647678272639. The reversal of 647678272610 is 16272876746.

It can be written as a sum of positive squares in 2 ways, for example, as 640638559201 + 7039713409 = 800399^2 + 83903^2 .

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

It is a super-2 number, since 2×647678272610² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32383913621 + ... + 32383913640.

Almost surely, 2^647678272610 is an apocalyptic number.

647678272610 is a deficient number, since it is larger than the sum of its proper divisors (518142618106).

647678272610 is a wasteful number, since it uses less digits than its factorization.

647678272610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64767827268.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 647678272610 in words is "six hundred forty-seven billion, six hundred seventy-eight million, two hundred seventy-two thousand, six hundred ten".