667813703 has 8 divisors (see below), whose sum is σ = 726208272. Its totient is φ = 611542656.

The previous prime is 667813697. The next prime is 667813733. The reversal of 667813703 is 307318766.

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

It is a cyclic number.

It is not a de Polignac number, because 667813703 - 2¹² = 667809607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667813733) 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, 530225 + ... + 531482.

It is an arithmetic number, because the mean of its divisors is an integer number (90776034).

Almost surely, 2^667813703 is an apocalyptic number.

667813703 is a deficient number, since it is larger than the sum of its proper divisors (58394569).

667813703 is a wasteful number, since it uses less digits than its factorization.

667813703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061761.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 667813703 is about 25842.0916916569. The cubic root of 667813703 is about 874.0811919364.

The spelling of 667813703 in words is "six hundred sixty-seven million, eight hundred thirteen thousand, seven hundred three".