667112651 has 4 divisors (see below), whose sum is σ = 667678704. Its totient is φ = 666546600.

The previous prime is 667112647. The next prime is 667112659. The reversal of 667112651 is 156211766.

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 667112651 - 2² = 667112647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667112659) 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, 281255 + ... + 283616.

It is an arithmetic number, because the mean of its divisors is an integer number (166919676).

Almost surely, 2^667112651 is an apocalyptic number.

667112651 is a deficient number, since it is larger than the sum of its proper divisors (566053).

667112651 is a wasteful number, since it uses less digits than its factorization.

667112651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566052.

The product of its digits is 15120, while the sum is 35.

The square root of 667112651 is about 25828.5239802820. The cubic root of 667112651 is about 873.7752229138.

The spelling of 667112651 in words is "six hundred sixty-seven million, one hundred twelve thousand, six hundred fifty-one".