86782087 has 12 divisors (see below), whose sum is σ = 101405200. Its totient is φ = 74236764.

The previous prime is 86782049. The next prime is 86782099. The reversal of 86782087 is 78028768.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 86782087 - 2¹¹ = 86780039 is a prime.

It is a super-2 number, since 2×86782087² = 15062261248151138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86782037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172278 + ... + 172780.

Almost surely, 2^86782087 is an apocalyptic number.

86782087 is a deficient number, since it is larger than the sum of its proper divisors (14623113).

86782087 is an frugal number, since it uses more digits than its factorization.

86782087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 86782087 is about 9315.6903662584. The cubic root of 86782087 is about 442.7344977309.

The spelling of 86782087 in words is "eighty-six million, seven hundred eighty-two thousand, eighty-seven".