6401212264 has 8 divisors (see below), whose sum is σ = 12002273010. Its totient is φ = 3200606128.

The previous prime is 6401212261. The next prime is 6401212277. The reversal of 6401212264 is 4622121046.

It can be written as a sum of positive squares in only one way, i.e., 6377300164 + 23912100 = 79858^2 + 4890^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6401212261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400075759 + ... + 400075774.

Almost surely, 2^6401212264 is an apocalyptic number.

It is an amenable number.

6401212264 is a deficient number, since it is larger than the sum of its proper divisors (5601060746).

6401212264 is a wasteful number, since it uses less digits than its factorization.

6401212264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800151539 (or 800151535 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 6401212264 is about 80007.5762912488. The cubic root of 6401212264 is about 1856.7527516912.

The spelling of 6401212264 in words is "six billion, four hundred one million, two hundred twelve thousand, two hundred sixty-four".