653997259 has 8 divisors (see below), whose sum is σ = 702222048. Its totient is φ = 606856320.

The previous prime is 653997221. The next prime is 653997269. The reversal of 653997259 is 952799356.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 653997259 - 2¹⁹ = 653472971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653997209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269712 + ... + 272125.

It is an arithmetic number, because the mean of its divisors is an integer number (87777756).

Almost surely, 2^653997259 is an apocalyptic number.

653997259 is a deficient number, since it is larger than the sum of its proper divisors (48224789).

653997259 is a wasteful number, since it uses less digits than its factorization.

653997259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541925.

The product of its digits is 4592700, while the sum is 55.

The square root of 653997259 is about 25573.3701142419. The cubic root of 653997259 is about 868.0111609026.

The spelling of 653997259 in words is "six hundred fifty-three million, nine hundred ninety-seven thousand, two hundred fifty-nine".