86666782 has 16 divisors (see below), whose sum is σ = 138417552. Its totient is φ = 40556160.

The previous prime is 86666777. The next prime is 86666791. The reversal of 86666782 is 28766668.

It is a super-2 number, since 2×86666782² = 15022262204471048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 888 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (8651097).

Almost surely, 2^86666782 is an apocalyptic number.

86666782 is a deficient number, since it is larger than the sum of its proper divisors (51750770).

86666782 is a wasteful number, since it uses less digits than its factorization.

86666782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14283.

The product of its digits is 1161216, while the sum is 49.

The square root of 86666782 is about 9309.4995569042. The cubic root of 86666782 is about 442.5383277259.

The spelling of 86666782 in words is "eighty-six million, six hundred sixty-six thousand, seven hundred eighty-two".