86776556 has 6 divisors (see below), whose sum is σ = 151858980. Its totient is φ = 43388276.

The previous prime is 86776421. The next prime is 86776559. The reversal of 86776556 is 65567768.

It is a happy number.

It is a super-2 number, since 2×86776556² = 15060341342442272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86776559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10847066 + ... + 10847073.

It is an arithmetic number, because the mean of its divisors is an integer number (25309830).

Almost surely, 2^86776556 is an apocalyptic number.

It is an amenable number.

86776556 is a deficient number, since it is larger than the sum of its proper divisors (65082424).

86776556 is a wasteful number, since it uses less digits than its factorization.

86776556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21694143 (or 21694141 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 50.

The square root of 86776556 is about 9315.3934967880. The cubic root of 86776556 is about 442.7250917324.

The spelling of 86776556 in words is "eighty-six million, seven hundred seventy-six thousand, five hundred fifty-six".