6405402 has 8 divisors (see below), whose sum is σ = 12810816. Its totient is φ = 2135132.

The previous prime is 6405397. The next prime is 6405457. The reversal of 6405402 is 2045046.

It is a happy number.

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

6405402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533778 + ... + 533789.

It is an arithmetic number, because the mean of its divisors is an integer number (1601352).

Almost surely, 2^6405402 is an apocalyptic number.

6405402 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.

6405402 is a wasteful number, since it uses less digits than its factorization.

6405402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067572.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 6405402 is about 2530.8895669310. The cubic root of 6405402 is about 185.7157758686.

The spelling of 6405402 in words is "six million, four hundred five thousand, four hundred two".