87786867 has 16 divisors (see below), whose sum is σ = 136039680. Its totient is φ = 49312992.

The previous prime is 87786833. The next prime is 87786871. The reversal of 87786867 is 76868778.

It is not a de Polignac number, because 87786867 - 2⁷ = 87786739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87786887) 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, 34188 + ... + 36665.

It is an arithmetic number, because the mean of its divisors is an integer number (8502480).

Almost surely, 2^87786867 is an apocalyptic number.

87786867 is a deficient number, since it is larger than the sum of its proper divisors (48252813).

87786867 is a wasteful number, since it uses less digits than its factorization.

87786867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70922.

The product of its digits is 6322176, while the sum is 57.

The square root of 87786867 is about 9369.4646058353. The cubic root of 87786867 is about 444.4366342215.

The spelling of 87786867 in words is "eighty-seven million, seven hundred eighty-six thousand, eight hundred sixty-seven".