667845898 has 16 divisors (see below), whose sum is σ = 1037979360. Its totient is φ = 322066576.

The previous prime is 667845853. The next prime is 667845907. The reversal of 667845898 is 898548766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47140 + ... + 59647.

It is an arithmetic number, because the mean of its divisors is an integer number (64873710).

Almost surely, 2^667845898 is an apocalyptic number.

667845898 is a deficient number, since it is larger than the sum of its proper divisors (370133462).

667845898 is a wasteful number, since it uses less digits than its factorization.

667845898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106901.

The product of its digits is 23224320, while the sum is 61.

The square root of 667845898 is about 25842.7146019918. The cubic root of 667845898 is about 874.0952380652.

The spelling of 667845898 in words is "six hundred sixty-seven million, eight hundred forty-five thousand, eight hundred ninety-eight".