258904623 has 16 divisors (see below), whose sum is σ = 354147840. Its totient is φ = 168165696.

The previous prime is 258904619. The next prime is 258904643. The reversal of 258904623 is 326409852.

It is a happy number.

It is not a de Polignac number, because 258904623 - 2² = 258904619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258904643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27963 + ... + 36051.

It is an arithmetic number, because the mean of its divisors is an integer number (22134240).

Almost surely, 2^258904623 is an apocalyptic number.

258904623 is a deficient number, since it is larger than the sum of its proper divisors (95243217).

258904623 is a wasteful number, since it uses less digits than its factorization.

258904623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 258904623 is about 16090.5134473702. The cubic root of 258904623 is about 637.3528543127.

The spelling of 258904623 in words is "two hundred fifty-eight million, nine hundred four thousand, six hundred twenty-three".