6457620812 has 6 divisors (see below), whose sum is σ = 11300836428. Its totient is φ = 3228810404.

The previous prime is 6457620811. The next prime is 6457620899. The reversal of 6457620812 is 2180267546.

It is a self number, because there is not a number n which added to its sum of digits gives 6457620812.

It is not an unprimeable number, because it can be changed into a prime (6457620811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807202598 + ... + 807202605.

It is an arithmetic number, because the mean of its divisors is an integer number (1883472738).

Almost surely, 2^6457620812 is an apocalyptic number.

It is an amenable number.

6457620812 is a deficient number, since it is larger than the sum of its proper divisors (4843215616).

6457620812 is a wasteful number, since it uses less digits than its factorization.

6457620812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614405207 (or 1614405205 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 6457620812 is about 80359.3231181050. The cubic root of 6457620812 is about 1862.1908139044.

The spelling of 6457620812 in words is "six billion, four hundred fifty-seven million, six hundred twenty thousand, eight hundred twelve".