6446402 has 4 divisors (see below), whose sum is σ = 9669606. Its totient is φ = 3223200.

The previous prime is 6446387. The next prime is 6446413. The reversal of 6446402 is 2046446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6295081 + 151321 = 2509^2 + 389^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611599 + ... + 1611602.

Almost surely, 2^6446402 is an apocalyptic number.

6446402 is a deficient number, since it is larger than the sum of its proper divisors (3223204).

6446402 is a wasteful number, since it uses less digits than its factorization.

6446402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223203.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 6446402 is about 2538.9765654689. The cubic root of 6446402 is about 186.1111795318. Note that the first 4 decimals are identical.

The spelling of 6446402 in words is "six million, four hundred forty-six thousand, four hundred two".