667342059 has 4 divisors (see below), whose sum is σ = 889789416. Its totient is φ = 444894704.

The previous prime is 667342003. The next prime is 667342061. The reversal of 667342059 is 950243766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 667342059 - 2⁷ = 667341931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667342059.

It is not an unprimeable number, because it can be changed into a prime (667342759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111223674 + ... + 111223679.

It is an arithmetic number, because the mean of its divisors is an integer number (222447354).

Almost surely, 2^667342059 is an apocalyptic number.

667342059 is a deficient number, since it is larger than the sum of its proper divisors (222447357).

667342059 is a wasteful number, since it uses less digits than its factorization.

667342059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222447356.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 667342059 is about 25832.9645801638. The cubic root of 667342059 is about 873.8753699446.

The spelling of 667342059 in words is "six hundred sixty-seven million, three hundred forty-two thousand, fifty-nine".