667842386 has 8 divisors (see below), whose sum is σ = 1002013680. Its totient is φ = 333837828.

The previous prime is 667842367. The next prime is 667842389. The reversal of 667842386 is 683248766.

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

It is not an unprimeable number, because it can be changed into a prime (667842389) 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, 31136 + ... + 48011.

It is an arithmetic number, because the mean of its divisors is an integer number (125251710).

Almost surely, 2^667842386 is an apocalyptic number.

667842386 is a deficient number, since it is larger than the sum of its proper divisors (334171294).

667842386 is a wasteful number, since it uses less digits than its factorization.

667842386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83368.

The product of its digits is 2322432, while the sum is 50.

The square root of 667842386 is about 25842.6466523845. The cubic root of 667842386 is about 874.0937058615.

The spelling of 667842386 in words is "six hundred sixty-seven million, eight hundred forty-two thousand, three hundred eighty-six".