667296400693 has 8 divisors (see below), whose sum is σ = 727285049568. Its totient is φ = 608544631344.

The previous prime is 667296400691. The next prime is 667296400697. The reversal of 667296400693 is 396004692766.

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

It is not a de Polignac number, because 667296400693 - 2¹ = 667296400691 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 (667296400691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309218755 + ... + 309220912.

It is an arithmetic number, because the mean of its divisors is an integer number (90910631196).

Almost surely, 2^667296400693 is an apocalyptic number.

It is an amenable number.

667296400693 is a deficient number, since it is larger than the sum of its proper divisors (59988648875).

667296400693 is a wasteful number, since it uses less digits than its factorization.

667296400693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618439763.

The product of its (nonzero) digits is 17635968, while the sum is 58.

The spelling of 667296400693 in words is "six hundred sixty-seven billion, two hundred ninety-six million, four hundred thousand, six hundred ninety-three".