668602437 has 8 divisors (see below), whose sum is σ = 895995936. Its totient is φ = 443471952.

The previous prime is 668602423. The next prime is 668602439. The reversal of 668602437 is 734206866.

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

It is not a de Polignac number, because 668602437 - 2⁴ = 668602421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668602439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565063 + ... + 566244.

It is an arithmetic number, because the mean of its divisors is an integer number (111999492).

Almost surely, 2^668602437 is an apocalyptic number.

It is an amenable number.

668602437 is a deficient number, since it is larger than the sum of its proper divisors (227393499).

668602437 is a wasteful number, since it uses less digits than its factorization.

668602437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131507.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 668602437 is about 25857.3478338363. The cubic root of 668602437 is about 874.4251732559.

The spelling of 668602437 in words is "six hundred sixty-eight million, six hundred two thousand, four hundred thirty-seven".