6745643910 has 48 divisors (see below), whose sum is σ = 18461766960. Its totient is φ = 1704162240.

The previous prime is 6745643909. The next prime is 6745643923. The reversal of 6745643910 is 193465476.

6745643910 is a `hidden beast` number, since 6 + 74 + 564 + 3 + 9 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1970701 + ... + 1974120.

It is an arithmetic number, because the mean of its divisors is an integer number (384620145).

Almost surely, 2^6745643910 is an apocalyptic number.

6745643910 is an abundant number, since it is smaller than the sum of its proper divisors (11716123050).

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

6745643910 is a wasteful number, since it uses less digits than its factorization.

6745643910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944853 (or 3944850 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 6745643910 is about 82131.8690278019. The cubic root of 6745643910 is about 1889.4749444323.

The spelling of 6745643910 in words is "six billion, seven hundred forty-five million, six hundred forty-three thousand, nine hundred ten".