6653401 has 4 divisors (see below), whose sum is σ = 7003600. Its totient is φ = 6303204.

The previous prime is 6653399. The next prime is 6653411. The reversal of 6653401 is 1043566.

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 6653401 - 2¹ = 6653399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6653411) 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, 175071 + ... + 175108.

It is an arithmetic number, because the mean of its divisors is an integer number (1750900).

Almost surely, 2^6653401 is an apocalyptic number.

It is an amenable number.

6653401 is a deficient number, since it is larger than the sum of its proper divisors (350199).

6653401 is a wasteful number, since it uses less digits than its factorization.

6653401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350198.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6653401 is about 2579.4187329707. The cubic root of 6653401 is about 188.0822881810.

Subtracting from 6653401 its product of nonzero digits (2160), we obtain a square (6651241 = 2579²).

Adding to 6653401 its reverse (1043566), we get a palindrome (7696967).

The spelling of 6653401 in words is "six million, six hundred fifty-three thousand, four hundred one".