647771243274 has 48 divisors (see below), whose sum is σ = 1440762358464. Its totient is φ = 210224044800.

The previous prime is 647771243269. The next prime is 647771243321. The reversal of 647771243274 is 472342177746.

647771243274 is a `hidden beast` number, since 6 + 4 + 77 + 71 + 2 + 432 + 74 = 666.

It is a super-2 number, since 2×647771243274² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 647771243274.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1104807 + ... + 1586234.

It is an arithmetic number, because the mean of its divisors is an integer number (30015882468).

Almost surely, 2^647771243274 is an apocalyptic number.

647771243274 is an abundant number, since it is smaller than the sum of its proper divisors (792991115190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647771243274 is a wasteful number, since it uses less digits than its factorization.

647771243274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691403 (or 2691400 counting only the distinct ones).

The product of its digits is 11063808, while the sum is 54.

The spelling of 647771243274 in words is "six hundred forty-seven billion, seven hundred seventy-one million, two hundred forty-three thousand, two hundred seventy-four".