6694012550 has 48 divisors (see below), whose sum is σ = 13125417360. Its totient is φ = 2532954240.

The previous prime is 6694012543. The next prime is 6694012627. The reversal of 6694012550 is 552104966.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 691544 + ... + 701156.

It is an arithmetic number, because the mean of its divisors is an integer number (273446195).

Almost surely, 2^6694012550 is an apocalyptic number.

6694012550 is a deficient number, since it is larger than the sum of its proper divisors (6431404810).

6694012550 is a wasteful number, since it uses less digits than its factorization.

6694012550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10377 (or 10372 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 6694012550 is about 81816.9453719705. The cubic root of 6694012550 is about 1884.6418933829.

The spelling of 6694012550 in words is "six billion, six hundred ninety-four million, twelve thousand, five hundred fifty".