6465700420 has 24 divisors (see below), whose sum is σ = 13944944664. Its totient is φ = 2516380416.

The previous prime is 6465700379. The next prime is 6465700421. The reversal of 6465700420 is 240075646.

It can be written as a sum of positive squares in 4 ways, for example, as 2242780164 + 4222920256 = 47358^2 + 64984^2 .

It is not an unprimeable number, because it can be changed into a prime (6465700421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4367977 + ... + 4369456.

It is an arithmetic number, because the mean of its divisors is an integer number (581039361).

Almost surely, 2^6465700420 is an apocalyptic number.

It is an amenable number.

6465700420 is an abundant number, since it is smaller than the sum of its proper divisors (7479244244).

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

6465700420 is a wasteful number, since it uses less digits than its factorization.

6465700420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737479 (or 8737477 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 6465700420 is about 80409.5791557200. The cubic root of 6465700420 is about 1862.9671318721.

The spelling of 6465700420 in words is "six billion, four hundred sixty-five million, seven hundred thousand, four hundred twenty".