86789778 has 8 divisors (see below), whose sum is σ = 173579568. Its totient is φ = 28929924.

The previous prime is 86789749. The next prime is 86789789. The reversal of 86789778 is 87798768.

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

86789778 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7232476 + ... + 7232487.

It is an arithmetic number, because the mean of its divisors is an integer number (21697446).

Almost surely, 2^86789778 is an apocalyptic number.

86789778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86789778 is a wasteful number, since it uses less digits than its factorization.

86789778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14464968.

The product of its digits is 9483264, while the sum is 60.

The square root of 86789778 is about 9316.1031552898. The cubic root of 86789778 is about 442.7475763533.

The spelling of 86789778 in words is "eighty-six million, seven hundred eighty-nine thousand, seven hundred seventy-eight".