258750987 has 32 divisors (see below), whose sum is σ = 397536000. Its totient is φ = 148055040.

The previous prime is 258750977. The next prime is 258750997. The reversal of 258750987 is 789057852.

It is an interprime number because it is at equal distance from previous prime (258750977) and next prime (258750997).

It is not a de Polignac number, because 258750987 - 2⁴ = 258750971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (258750917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255939 + ... + 256947.

It is an arithmetic number, because the mean of its divisors is an integer number (12423000).

Almost surely, 2^258750987 is an apocalyptic number.

258750987 is a deficient number, since it is larger than the sum of its proper divisors (138785013).

258750987 is a wasteful number, since it uses less digits than its factorization.

258750987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The square root of 258750987 is about 16085.7386215243. The cubic root of 258750987 is about 637.2267593344.

The spelling of 258750987 in words is "two hundred fifty-eight million, seven hundred fifty thousand, nine hundred eighty-seven".