78524887 has 8 divisors (see below), whose sum is σ = 95021856. Its totient is φ = 63347712.

The previous prime is 78524869. The next prime is 78524893. The reversal of 78524887 is 78842587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78524887 - 2¹⁹ = 78000599 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 78524887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78524807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329818 + ... + 330055.

It is an arithmetic number, because the mean of its divisors is an integer number (11877732).

Almost surely, 2^78524887 is an apocalyptic number.

78524887 is a deficient number, since it is larger than the sum of its proper divisors (16496969).

78524887 is a wasteful number, since it uses less digits than its factorization.

78524887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659897.

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

The square root of 78524887 is about 8861.4269166991. The cubic root of 78524887 is about 428.2221293610. Note that the first 3 decimals are identical.

The spelling of 78524887 in words is "seventy-eight million, five hundred twenty-four thousand, eight hundred eighty-seven".