6648401375 has 64 divisors (see below), whose sum is σ = 10381962240. Its totient is φ = 4129488000.

The previous prime is 6648401323. The next prime is 6648401393. The reversal of 6648401375 is 5731048466.

It is not a de Polignac number, because 6648401375 - 2⁶ = 6648401311 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3050036 + ... + 3052214.

It is an arithmetic number, because the mean of its divisors is an integer number (162218160).

Almost surely, 2^6648401375 is an apocalyptic number.

6648401375 is a deficient number, since it is larger than the sum of its proper divisors (3733560865).

6648401375 is a wasteful number, since it uses less digits than its factorization.

6648401375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2519 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 6648401375 is about 81537.7297635886. The cubic root of 6648401375 is about 1880.3516558684.

The spelling of 6648401375 in words is "six billion, six hundred forty-eight million, four hundred one thousand, three hundred seventy-five".