667122600761 has 4 divisors (see below), whose sum is σ = 667536193572. Its totient is φ = 666709007952.

The previous prime is 667122600737. The next prime is 667122600763. The reversal of 667122600761 is 167006221766.

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

It can be written as a sum of positive squares in 2 ways, for example, as 487002996736 + 180119604025 = 697856^2 + 424405^2 .

It is a cyclic number.

It is not a de Polignac number, because 667122600761 - 2²⁶ = 667055491897 is a prime.

It is a super-2 number, since 2×667122600761² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667122600763) 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, 206793986 + ... + 206797211.

It is an arithmetic number, because the mean of its divisors is an integer number (166884048393).

Almost surely, 2^667122600761 is an apocalyptic number.

It is an amenable number.

667122600761 is a deficient number, since it is larger than the sum of its proper divisors (413592811).

667122600761 is a wasteful number, since it uses less digits than its factorization.

667122600761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413592810.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 667122600761 in words is "six hundred sixty-seven billion, one hundred twenty-two million, six hundred thousand, seven hundred sixty-one".