6457086784 has 28 divisors (see below), whose sum is σ = 12815933728. Its totient is φ = 3227875200.

The previous prime is 6457086733. The next prime is 6457086847. The reversal of 6457086784 is 4876807546.

It is a super-2 number, since 2×6457086784² = 83387939472214925312, which contains 22 as substring.

It is a congruent number.

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, 479179 + ... + 492469.

Almost surely, 2^6457086784 is an apocalyptic number.

6457086784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6457086784 is a deficient number, since it is larger than the sum of its proper divisors (6358846944).

6457086784 is a wasteful number, since it uses less digits than its factorization.

6457086784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20894 (or 20884 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 55.

The square root of 6457086784 is about 80356.0002986709. Note that the first 3 decimals coincide. The cubic root of 6457086784 is about 1862.1394797532.

The spelling of 6457086784 in words is "six billion, four hundred fifty-seven million, eighty-six thousand, seven hundred eighty-four".