8401668 has 24 divisors (see below), whose sum is σ = 21386400. Its totient is φ = 2545920.

The previous prime is 8401661. The next prime is 8401681. The reversal of 8401668 is 8661048.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (8401661) 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, 31693 + ... + 31956.

It is an arithmetic number, because the mean of its divisors is an integer number (891100).

Almost surely, 2^8401668 is an apocalyptic number.

It is an amenable number.

8401668 is an abundant number, since it is smaller than the sum of its proper divisors (12984732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8401668 is a wasteful number, since it uses less digits than its factorization.

8401668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63667 (or 63665 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 8401668 is about 2898.5630922925. The cubic root of 8401668 is about 203.2927256242.

The spelling of 8401668 in words is "eight million, four hundred one thousand, six hundred sixty-eight".