86773820 has 24 divisors (see below), whose sum is σ = 208257504. Its totient is φ = 29750976.

The previous prime is 86773807. The next prime is 86773823. The reversal of 86773820 is 2837768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86773823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309767 + ... + 310046.

It is an arithmetic number, because the mean of its divisors is an integer number (8677396).

Almost surely, 2^86773820 is an apocalyptic number.

It is an amenable number.

86773820 is an abundant number, since it is smaller than the sum of its proper divisors (121483684).

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

86773820 is a wasteful number, since it uses less digits than its factorization.

86773820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619829 (or 619827 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 86773820 is about 9315.2466419306. The cubic root of 86773820 is about 442.7204387530.

The spelling of 86773820 in words is "eighty-six million, seven hundred seventy-three thousand, eight hundred twenty".