6420402264 has 16 divisors (see below), whose sum is σ = 16051005720. Its totient is φ = 2140134080.

The previous prime is 6420402259. The next prime is 6420402301. The reversal of 6420402264 is 4622040246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133758357 + ... + 133758404.

Almost surely, 2^6420402264 is an apocalyptic number.

It is an amenable number.

6420402264 is an abundant number, since it is smaller than the sum of its proper divisors (9630603456).

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

6420402264 is a wasteful number, since it uses less digits than its factorization.

6420402264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267516770 (or 267516766 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 6420402264 is about 80127.4126875441. The cubic root of 6420402264 is about 1858.6063348999.

The spelling of 6420402264 in words is "six billion, four hundred twenty million, four hundred two thousand, two hundred sixty-four".