667606633255507 has 8 divisors (see below), whose sum is σ = 728299144813680. Its totient is φ = 606914288271360.

The previous prime is 667606633255469. The next prime is 667606633255531. The reversal of 667606633255507 is 705552336606766.

667606633255507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667606633255507 is a prime.

It is a super-2 number, since 2×667606633255507² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667606633255547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33188782 + ... + 49363027.

It is an arithmetic number, because the mean of its divisors is an integer number (91037393101710).

Almost surely, 2^{667606633255507} is an apocalyptic number.

667606633255507 is a deficient number, since it is larger than the sum of its proper divisors (60692511558173).

667606633255507 is a wasteful number, since it uses less digits than its factorization.

667606633255507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83287013.

The product of its (nonzero) digits is 857304000, while the sum is 67.

The spelling of 667606633255507 in words is "six hundred sixty-seven trillion, six hundred six billion, six hundred thirty-three million, two hundred fifty-five thousand, five hundred seven".