259720491 has 8 divisors (see below), whose sum is σ = 358235280. Its totient is φ = 167176352.

The previous prime is 259720477. The next prime is 259720541. The reversal of 259720491 is 194027952.

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 259720491 - 2⁵ = 259720459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (259725491) 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, 1492560 + ... + 1492733.

It is an arithmetic number, because the mean of its divisors is an integer number (44779410).

Almost surely, 2^259720491 is an apocalyptic number.

259720491 is a deficient number, since it is larger than the sum of its proper divisors (98514789).

259720491 is a wasteful number, since it uses less digits than its factorization.

259720491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985325.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 259720491 is about 16115.8459597999. The cubic root of 259720491 is about 638.0216341101.

The spelling of 259720491 in words is "two hundred fifty-nine million, seven hundred twenty thousand, four hundred ninety-one".