653997199 has 2 divisors, whose sum is σ = 653997200. Its totient is φ = 653997198.

The previous prime is 653997193. The next prime is 653997209. The reversal of 653997199 is 991799356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653997199 - 2⁵ = 653997167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653997193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326998599 + 326998600.

It is an arithmetic number, because the mean of its divisors is an integer number (326998600).

Almost surely, 2^653997199 is an apocalyptic number.

653997199 is a deficient number, since it is larger than the sum of its proper divisors (1).

653997199 is an equidigital number, since it uses as much as digits as its factorization.

653997199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4133430, while the sum is 58.

The square root of 653997199 is about 25573.3689411466. The cubic root of 653997199 is about 868.0111343578.

The spelling of 653997199 in words is "six hundred fifty-three million, nine hundred ninety-seven thousand, one hundred ninety-nine".