667267412327 has 4 divisors (see below), whose sum is σ = 667270412640. Its totient is φ = 667264412016.

The previous prime is 667267412321. The next prime is 667267412333. The reversal of 667267412327 is 723214762766.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (667267412321) and next prime (667267412333).

It is a cyclic number.

It is not a de Polignac number, because 667267412327 - 2¹⁸ = 667267150183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667267412321) 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, 1137302 + ... + 1621107.

It is an arithmetic number, because the mean of its divisors is an integer number (166817603160).

Almost surely, 2^667267412327 is an apocalyptic number.

667267412327 is a deficient number, since it is larger than the sum of its proper divisors (3000313).

667267412327 is a wasteful number, since it uses less digits than its factorization.

667267412327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000312.

The product of its digits is 7112448, while the sum is 53.

The spelling of 667267412327 in words is "six hundred sixty-seven billion, two hundred sixty-seven million, four hundred twelve thousand, three hundred twenty-seven".