402666351 has 8 divisors (see below), whose sum is σ = 539587200. Its totient is φ = 267094872.

The previous prime is 402666311. The next prime is 402666353. The reversal of 402666351 is 153666204.

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

It is not a de Polignac number, because 402666351 - 2⁶ = 402666287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402666353) 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, 336645 + ... + 337838.

It is an arithmetic number, because the mean of its divisors is an integer number (67448400).

Almost surely, 2^402666351 is an apocalyptic number.

402666351 is a deficient number, since it is larger than the sum of its proper divisors (136920849).

402666351 is a wasteful number, since it uses less digits than its factorization.

402666351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674685.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 402666351 is about 20066.5480588964. The cubic root of 402666351 is about 738.4398289633.

The spelling of 402666351 in words is "four hundred two million, six hundred sixty-six thousand, three hundred fifty-one".