578240887 has 16 divisors (see below), whose sum is σ = 682110720. Its totient is φ = 479939328.

The previous prime is 578240879. The next prime is 578240933. The reversal of 578240887 is 788042875.

It is a cyclic number.

It is not a de Polignac number, because 578240887 - 2³ = 578240879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 578240887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578240807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17223 + ... + 38119.

It is an arithmetic number, because the mean of its divisors is an integer number (42631920).

Almost surely, 2^578240887 is an apocalyptic number.

578240887 is a deficient number, since it is larger than the sum of its proper divisors (103869833).

578240887 is a wasteful number, since it uses less digits than its factorization.

578240887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21030.

The product of its (nonzero) digits is 1003520, while the sum is 49.

The square root of 578240887 is about 24046.6398276350. The cubic root of 578240887 is about 833.1111220674. Note that the first 4 decimals are identical.

The spelling of 578240887 in words is "five hundred seventy-eight million, two hundred forty thousand, eight hundred eighty-seven".