578241687 has 16 divisors (see below), whose sum is σ = 822690560. Its totient is φ = 360199872.

The previous prime is 578241641. The next prime is 578241709. The reversal of 578241687 is 786142875.

578241687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 578241687 - 2²³ = 569853079 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 (578241617) 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, 65323 + ... + 73644.

It is an arithmetic number, because the mean of its divisors is an integer number (51418160).

Almost surely, 2^578241687 is an apocalyptic number.

578241687 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

578241687 is a deficient number, since it is larger than the sum of its proper divisors (244448873).

578241687 is a wasteful number, since it uses less digits than its factorization.

578241687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139062.

The product of its digits is 752640, while the sum is 48.

The square root of 578241687 is about 24046.6564619699. The cubic root of 578241687 is about 833.1115062721. Note that the first 3 decimals are identical.

The spelling of 578241687 in words is "five hundred seventy-eight million, two hundred forty-one thousand, six hundred eighty-seven".