86620905 has 96 divisors (see below), whose sum is σ = 185552640. Its totient is φ = 36495360.

The previous prime is 86620879. The next prime is 86620907. The reversal of 86620905 is 50902668.

It is not a de Polignac number, because 86620905 - 2⁶ = 86620841 is a prime.

It is a super-3 number, since 3×86620905³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86620905.

It is not an unprimeable number, because it can be changed into a prime (86620907) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 245209 + ... + 245561.

It is an arithmetic number, because the mean of its divisors is an integer number (1932840).

Almost surely, 2^86620905 is an apocalyptic number.

It is an amenable number.

86620905 is an abundant number, since it is smaller than the sum of its proper divisors (98931735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86620905 is a wasteful number, since it uses less digits than its factorization.

86620905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 86620905 is about 9307.0352422240. The cubic root of 86620905 is about 442.4602281596.

The spelling of 86620905 in words is "eighty-six million, six hundred twenty thousand, nine hundred five".