86211785 has 8 divisors (see below), whose sum is σ = 112859136. Its totient is φ = 62699440.

The previous prime is 86211779. The next prime is 86211793. The reversal of 86211785 is 58711268.

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

It is not a de Polignac number, because 86211785 - 2⁸ = 86211529 is a prime.

It is a Duffinian 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, 783689 + ... + 783798.

It is an arithmetic number, because the mean of its divisors is an integer number (14107392).

Almost surely, 2^86211785 is an apocalyptic number.

It is an amenable number.

86211785 is a deficient number, since it is larger than the sum of its proper divisors (26647351).

86211785 is a wasteful number, since it uses less digits than its factorization.

86211785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567503.

The product of its digits is 26880, while the sum is 38.

The square root of 86211785 is about 9285.0301561169. The cubic root of 86211785 is about 441.7625325703.

The spelling of 86211785 in words is "eighty-six million, two hundred eleven thousand, seven hundred eighty-five".