667670801757 has 8 divisors (see below), whose sum is σ = 896632252320. Its totient is φ = 441911609520.

The previous prime is 667670801737. The next prime is 667670801761. The reversal of 667670801757 is 757108076766.

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

It is not a de Polignac number, because 667670801757 - 2²⁰ = 667669753181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667670801757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667670801737) 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, 800564094 + ... + 800564927.

It is an arithmetic number, because the mean of its divisors is an integer number (112079031540).

Almost surely, 2^667670801757 is an apocalyptic number.

It is an amenable number.

667670801757 is a deficient number, since it is larger than the sum of its proper divisors (228961450563).

667670801757 is a wasteful number, since it uses less digits than its factorization.

667670801757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601129163.

The product of its (nonzero) digits is 20744640, while the sum is 60.

The spelling of 667670801757 in words is "six hundred sixty-seven billion, six hundred seventy million, eight hundred one thousand, seven hundred fifty-seven".