6402664231 has 2 divisors, whose sum is σ = 6402664232. Its totient is φ = 6402664230.

The previous prime is 6402664201. The next prime is 6402664319. The reversal of 6402664231 is 1324662046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6402664231 is a prime.

It is a super-2 number, since 2×6402664231² = 81988218509853642722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6402664201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201332115 + 3201332116.

It is an arithmetic number, because the mean of its divisors is an integer number (3201332116).

Almost surely, 2^6402664231 is an apocalyptic number.

6402664231 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402664231 is an equidigital number, since it uses as much as digits as its factorization.

6402664231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 6402664231 is about 80016.6497111695. The cubic root of 6402664231 is about 1856.8931282220.

The spelling of 6402664231 in words is "six billion, four hundred two million, six hundred sixty-four thousand, two hundred thirty-one".