667233087645 has 32 divisors (see below), whose sum is σ = 1104670425600. Its totient is φ = 343498143744.

The previous prime is 667233087623. The next prime is 667233087649. The reversal of 667233087645 is 546780332766.

667233087645 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667233087645 - 2²⁰ = 667232039069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667233087649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1509069 + ... + 1900461.

It is an arithmetic number, because the mean of its divisors is an integer number (34520950800).

Almost surely, 2^667233087645 is an apocalyptic number.

It is an amenable number.

667233087645 is a deficient number, since it is larger than the sum of its proper divisors (437437337955).

667233087645 is a wasteful number, since it uses less digits than its factorization.

667233087645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395349.

The product of its (nonzero) digits is 30481920, while the sum is 57.

The spelling of 667233087645 in words is "six hundred sixty-seven billion, two hundred thirty-three million, eighty-seven thousand, six hundred forty-five".