6457603720 has 64 divisors (see below), whose sum is σ = 15314644800. Its totient is φ = 2443841280.

The previous prime is 6457603709. The next prime is 6457603741. The reversal of 6457603720 is 273067546.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 611122 + ... + 621598.

It is an arithmetic number, because the mean of its divisors is an integer number (239291325).

Almost surely, 2^6457603720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6457603720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7657322400).

6457603720 is an abundant number, since it is smaller than the sum of its proper divisors (8857041080).

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

6457603720 is a wasteful number, since it uses less digits than its factorization.

6457603720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318 (or 11314 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 6457603720 is about 80359.2167706978. The cubic root of 6457603720 is about 1862.1891709570.

The spelling of 6457603720 in words is "six billion, four hundred fifty-seven million, six hundred three thousand, seven hundred twenty".