667234880747 has 2 divisors, whose sum is σ = 667234880748. Its totient is φ = 667234880746.

The previous prime is 667234880723. The next prime is 667234880791. The reversal of 667234880747 is 747088432766.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667234880747 is a prime.

It is a super-2 number, since 2×667234880747² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 667234880747.

It is not a weakly prime, because it can be changed into another prime (667234850747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333617440373 + 333617440374.

It is an arithmetic number, because the mean of its divisors is an integer number (333617440374).

Almost surely, 2^667234880747 is an apocalyptic number.

667234880747 is a deficient number, since it is larger than the sum of its proper divisors (1).

667234880747 is an equidigital number, since it uses as much as digits as its factorization.

667234880747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75866112, while the sum is 62.

The spelling of 667234880747 in words is "six hundred sixty-seven billion, two hundred thirty-four million, eight hundred eighty thousand, seven hundred forty-seven".