86869810 has 8 divisors (see below), whose sum is σ = 156365676. Its totient is φ = 34747920.

The previous prime is 86869807. The next prime is 86869817. The reversal of 86869810 is 1896868.

It can be written as a sum of positive squares in 2 ways, for example, as 83887281 + 2982529 = 9159^2 + 1727^2 .

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

It is a super-2 number, since 2×86869810² = 15092727778872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86869817) 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 in 3 ways as a sum of consecutive naturals, for example, 4343481 + ... + 4343500.

Almost surely, 2^86869810 is an apocalyptic number.

86869810 is a deficient number, since it is larger than the sum of its proper divisors (69495866).

86869810 is a wasteful number, since it uses less digits than its factorization.

86869810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8686988.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 86869810 is about 9320.3975237111. The cubic root of 86869810 is about 442.8836257390.

It can be divided in two parts, 8686 and 9810, that added together give a square (18496 = 136²).

The spelling of 86869810 in words is "eighty-six million, eight hundred sixty-nine thousand, eight hundred ten".