787878287 has 8 divisors (see below), whose sum is σ = 906396672. Its totient is φ = 670851000.

The previous prime is 787878251. The next prime is 787878313. The reversal of 787878287 is 782878787.

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

It is a cyclic number.

It is not a de Polignac number, because 787878287 - 2¹⁰ = 787877263 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 (787878227) 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 7 ways as a sum of consecutive naturals, for example, 371639 + ... + 373752.

It is an arithmetic number, because the mean of its divisors is an integer number (113299584).

Almost surely, 2^787878287 is an apocalyptic number.

787878287 is a deficient number, since it is larger than the sum of its proper divisors (118518385).

787878287 is a wasteful number, since it uses less digits than its factorization.

787878287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745549.

The product of its digits is 19668992, while the sum is 62.

The square root of 787878287 is about 28069.1696884678. The cubic root of 787878287 is about 923.6052169168.

The spelling of 787878287 in words is "seven hundred eighty-seven million, eight hundred seventy-eight thousand, two hundred eighty-seven".