6667457790 has 32 divisors (see below), whose sum is σ = 18287884800. Its totient is φ = 1523990304.

The previous prime is 6667457779. The next prime is 6667457791. The reversal of 6667457790 is 977547666.

It is a self number, because there is not a number n which added to its sum of digits gives 6667457790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667457791) 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 in 15 ways as a sum of consecutive naturals, for example, 15874690 + ... + 15875109.

It is an arithmetic number, because the mean of its divisors is an integer number (571496400).

Almost surely, 2^6667457790 is an apocalyptic number.

6667457790 is an abundant number, since it is smaller than the sum of its proper divisors (11620427010).

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

6667457790 is a wasteful number, since it uses less digits than its factorization.

6667457790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31749816.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The square root of 6667457790 is about 81654.5025702808. The cubic root of 6667457790 is about 1882.1465023734.

The spelling of 6667457790 in words is "six billion, six hundred sixty-seven million, four hundred fifty-seven thousand, seven hundred ninety".