667900193 has 8 divisors (see below), whose sum is σ = 675386208. Its totient is φ = 660426624.

The previous prime is 667900183. The next prime is 667900229. The reversal of 667900193 is 391009766.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 667900193 - 2²⁰ = 666851617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667900193.

It is not an unprimeable number, because it can be changed into a prime (667900183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141530 + ... + 146172.

It is an arithmetic number, because the mean of its divisors is an integer number (84423276).

Almost surely, 2^667900193 is an apocalyptic number.

It is an amenable number.

667900193 is a deficient number, since it is larger than the sum of its proper divisors (7486015).

667900193 is a wasteful number, since it uses less digits than its factorization.

667900193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 667900193 is about 25843.7650701286. The cubic root of 667900193 is about 874.1189250240.

The spelling of 667900193 in words is "six hundred sixty-seven million, nine hundred thousand, one hundred ninety-three".