6654121 has 4 divisors (see below), whose sum is σ = 6808912. Its totient is φ = 6499332.

The previous prime is 6654113. The next prime is 6654127. The reversal of 6654121 is 1214566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6654121 - 2³ = 6654113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6654127) 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, 77331 + ... + 77416.

It is an arithmetic number, because the mean of its divisors is an integer number (1702228).

Almost surely, 2^6654121 is an apocalyptic number.

It is an amenable number.

6654121 is a deficient number, since it is larger than the sum of its proper divisors (154791).

6654121 is a wasteful number, since it uses less digits than its factorization.

6654121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154790.

The product of its digits is 1440, while the sum is 25.

The square root of 6654121 is about 2579.5582955227. The cubic root of 6654121 is about 188.0890723987.

Adding to 6654121 its reverse (1214566), we get a palindrome (7868687).

The spelling of 6654121 in words is "six million, six hundred fifty-four thousand, one hundred twenty-one".