402036666 has 8 divisors (see below), whose sum is σ = 804073344. Its totient is φ = 134012220.

The previous prime is 402036653. The next prime is 402036667. The reversal of 402036666 is 666630204.

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

402036666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (402036667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33503050 + ... + 33503061.

It is an arithmetic number, because the mean of its divisors is an integer number (100509168).

Almost surely, 2^402036666 is an apocalyptic number.

402036666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402036666 is a wasteful number, since it uses less digits than its factorization.

402036666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67006116.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 402036666 is about 20050.8520018477. The cubic root of 402036666 is about 738.0547069117.

The spelling of 402036666 in words is "four hundred two million, thirty-six thousand, six hundred sixty-six".