647085944376 has 64 divisors (see below), whose sum is σ = 1799301319200. Its totient is φ = 215474471424.

The previous prime is 647085944341. The next prime is 647085944389. The reversal of 647085944376 is 673449580746.

It is a happy number.

647085944376 is a `hidden beast` number, since 6 + 4 + 7 + 0 + 8 + 594 + 4 + 37 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322115 + ... + 1744178.

Almost surely, 2^647085944376 is an apocalyptic number.

It is an amenable number.

647085944376 is an abundant number, since it is smaller than the sum of its proper divisors (1152215374824).

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

647085944376 is a wasteful number, since it uses less digits than its factorization.

647085944376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067285 (or 3067275 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 63.

The spelling of 647085944376 in words is "six hundred forty-seven billion, eighty-five million, nine hundred forty-four thousand, three hundred seventy-six".