86378547 has 32 divisors (see below), whose sum is σ = 128217600. Its totient is φ = 51448320.

The previous prime is 86378543. The next prime is 86378563. The reversal of 86378547 is 74587368.

It is not a de Polignac number, because 86378547 - 2² = 86378543 is a prime.

It is a super-2 number, since 2×86378547² = 14922506763662418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86378496 and 86378505.

It is not an unprimeable number, because it can be changed into a prime (86378543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247329 + ... + 247677.

It is an arithmetic number, because the mean of its divisors is an integer number (4006800).

Almost surely, 2^86378547 is an apocalyptic number.

86378547 is a deficient number, since it is larger than the sum of its proper divisors (41839053).

86378547 is a wasteful number, since it uses less digits than its factorization.

86378547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603.

The product of its digits is 1128960, while the sum is 48.

The square root of 86378547 is about 9294.0059715927. The cubic root of 86378547 is about 442.0471872119.

The spelling of 86378547 in words is "eighty-six million, three hundred seventy-eight thousand, five hundred forty-seven".