6556402 has 12 divisors (see below), whose sum is σ = 10009818. Its totient is φ = 3220800.

The previous prime is 6556399. The next prime is 6556421. The reversal of 6556402 is 2046556.

It can be written as a sum of positive squares in 3 ways, for example, as 982081 + 5574321 = 991^2 + 2361^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7002 + ... + 7882.

Almost surely, 2^6556402 is an apocalyptic number.

6556402 is a deficient number, since it is larger than the sum of its proper divisors (3453416).

6556402 is an equidigital number, since it uses as much as digits as its factorization.

6556402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 6556402 is about 2560.5472071415. The cubic root of 6556402 is about 187.1638016855.

The spelling of 6556402 in words is "six million, five hundred fifty-six thousand, four hundred two".