258797663 has 4 divisors (see below), whose sum is σ = 260243640. Its totient is φ = 257351688.

The previous prime is 258797639. The next prime is 258797713. The reversal of 258797663 is 366797852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258797663 - 2⁶ = 258797599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258797603) 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, 722720 + ... + 723077.

It is an arithmetic number, because the mean of its divisors is an integer number (65060910).

Almost surely, 2^258797663 is an apocalyptic number.

258797663 is a deficient number, since it is larger than the sum of its proper divisors (1445977).

258797663 is a wasteful number, since it uses less digits than its factorization.

258797663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445976.

The product of its digits is 3810240, while the sum is 53.

The square root of 258797663 is about 16087.1894064812. The cubic root of 258797663 is about 637.2650734014.

The spelling of 258797663 in words is "two hundred fifty-eight million, seven hundred ninety-seven thousand, six hundred sixty-three".