6457706831 has 4 divisors (see below), whose sum is σ = 6457960464. Its totient is φ = 6457453200.

The previous prime is 6457706821. The next prime is 6457706837. The reversal of 6457706831 is 1386077546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6457706831 is a prime.

It is a super-2 number, since 2×6457706831² = 83403955030288125122, 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 (6457706837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83750 + ... + 141171.

It is an arithmetic number, because the mean of its divisors is an integer number (1614490116).

Almost surely, 2^6457706831 is an apocalyptic number.

6457706831 is a deficient number, since it is larger than the sum of its proper divisors (253633).

6457706831 is a wasteful number, since it uses less digits than its factorization.

6457706831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253632.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 6457706831 is about 80359.8583311345. The cubic root of 6457706831 is about 1862.1990823304.

The spelling of 6457706831 in words is "six billion, four hundred fifty-seven million, seven hundred six thousand, eight hundred thirty-one".