6553642 has 4 divisors (see below), whose sum is σ = 9830466. Its totient is φ = 3276820.

The previous prime is 6553621. The next prime is 6553663. The reversal of 6553642 is 2463556.

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

It is an interprime number because it is at equal distance from previous prime (6553621) and next prime (6553663).

It can be written as a sum of positive squares in only one way, i.e., 4330561 + 2223081 = 2081^2 + 1491^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638409 + ... + 1638412.

Almost surely, 2^6553642 is an apocalyptic number.

6553642 is a deficient number, since it is larger than the sum of its proper divisors (3276824).

6553642 is a wasteful number, since it uses less digits than its factorization.

6553642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276823.

The product of its digits is 21600, while the sum is 31.

The square root of 6553642 is about 2560.0082031119. The cubic root of 6553642 is about 187.1375350128.

The spelling of 6553642 in words is "six million, five hundred fifty-three thousand, six hundred forty-two".