6653389 has 2 divisors, whose sum is σ = 6653390. Its totient is φ = 6653388.

The previous prime is 6653351. The next prime is 6653399. The reversal of 6653389 is 9833566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4235364 + 2418025 = 2058^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6653389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6653329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3326694 + 3326695.

It is an arithmetic number, because the mean of its divisors is an integer number (3326695).

Almost surely, 2^6653389 is an apocalyptic number.

It is an amenable number.

6653389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6653389 is an equidigital number, since it uses as much as digits as its factorization.

6653389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 6653389 is about 2579.4164068642. The cubic root of 6653389 is about 188.0821751065.

The spelling of 6653389 in words is "six million, six hundred fifty-three thousand, three hundred eighty-nine".