667648800501 has 16 divisors (see below), whose sum is σ = 942582259584. Its totient is φ = 418908340224.

The previous prime is 667648800439. The next prime is 667648800527. The reversal of 667648800501 is 105008846766.

It is not a de Polignac number, because 667648800501 - 2⁶ = 667648800437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667648800551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3191541 + ... + 3394293.

It is an arithmetic number, because the mean of its divisors is an integer number (58911391224).

Almost surely, 2^667648800501 is an apocalyptic number.

It is an amenable number.

667648800501 is a deficient number, since it is larger than the sum of its proper divisors (274933459083).

667648800501 is a wasteful number, since it uses less digits than its factorization.

667648800501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267340.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 667648800501 in words is "six hundred sixty-seven billion, six hundred forty-eight million, eight hundred thousand, five hundred one".