668001417 has 8 divisors (see below), whose sum is σ = 943060896. Its totient is φ = 419138112.

The previous prime is 668001401. The next prime is 668001437. The reversal of 668001417 is 714100866.

It is a happy number.

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

It is not a de Polignac number, because 668001417 - 2⁴ = 668001401 is a prime.

It is a super-2 number, since 2×668001417² = 892451786228015778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (668001437) 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, 6548983 + ... + 6549084.

It is an arithmetic number, because the mean of its divisors is an integer number (117882612).

Almost surely, 2^668001417 is an apocalyptic number.

It is an amenable number.

668001417 is a deficient number, since it is larger than the sum of its proper divisors (275059479).

668001417 is a wasteful number, since it uses less digits than its factorization.

668001417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13098087.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 668001417 is about 25845.7233793136. The cubic root of 668001417 is about 874.1630819931.

The spelling of 668001417 in words is "six hundred sixty-eight million, one thousand, four hundred seventeen".