6465720 has 32 divisors (see below), whose sum is σ = 19397520. Its totient is φ = 1724160.

The previous prime is 6465707. The next prime is 6465733. The reversal of 6465720 is 275646.

It is an interprime number because it is at equal distance from previous prime (6465707) and next prime (6465733).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26821 + ... + 27060.

Almost surely, 2^6465720 is an apocalyptic number.

6465720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6465720 is an abundant number, since it is smaller than the sum of its proper divisors (12931800).

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

6465720 is a wasteful number, since it uses less digits than its factorization.

6465720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53895 (or 53891 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 6465720 is about 2542.7780083995. The cubic root of 6465720 is about 186.2969012404.

The spelling of 6465720 in words is "six million, four hundred sixty-five thousand, seven hundred twenty".