6404257750 has 48 divisors (see below), whose sum is σ = 13177801728. Its totient is φ = 2328810000.

The previous prime is 6404257733. The next prime is 6404257771. The reversal of 6404257750 is 577524046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75606 + ... + 136105.

It is an arithmetic number, because the mean of its divisors is an integer number (274537536).

Almost surely, 2^6404257750 is an apocalyptic number.

6404257750 is an abundant number, since it is smaller than the sum of its proper divisors (6773543978).

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

6404257750 is a wasteful number, since it uses less digits than its factorization.

6404257750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211750 (or 211729 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The square root of 6404257750 is about 80026.6065130841. The cubic root of 6404257750 is about 1857.0471656105.

The spelling of 6404257750 in words is "six billion, four hundred four million, two hundred fifty-seven thousand, seven hundred fifty".