6642554 has 8 divisors (see below), whose sum is σ = 10195680. Its totient is φ = 3243996.

The previous prime is 6642553. The next prime is 6642593. The reversal of 6642554 is 4552466.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6642554.

It is not an unprimeable number, because it can be changed into a prime (6642551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38534 + ... + 38705.

It is an arithmetic number, because the mean of its divisors is an integer number (1274460).

Almost surely, 2^6642554 is an apocalyptic number.

6642554 is a deficient number, since it is larger than the sum of its proper divisors (3553126).

6642554 is a wasteful number, since it uses less digits than its factorization.

6642554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77284.

The product of its digits is 28800, while the sum is 32.

The square root of 6642554 is about 2577.3152698108. The cubic root of 6642554 is about 187.9800227754.

The spelling of 6642554 in words is "six million, six hundred forty-two thousand, five hundred fifty-four".