86994810 has 160 divisors (see below), whose sum is σ = 272511360. Its totient is φ = 19502208.

The previous prime is 86994779. The next prime is 86994833. The reversal of 86994810 is 1849968.

86994810 is a `hidden beast` number, since 86 + 99 + 481 + 0 = 666.

It is a super-2 number, since 2×86994810² = 15136193933872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 379776 + ... + 380004.

It is an arithmetic number, because the mean of its divisors is an integer number (1703196).

Almost surely, 2^86994810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86994810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136255680).

86994810 is an abundant number, since it is smaller than the sum of its proper divisors (185516550).

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

86994810 is a wasteful number, since it uses less digits than its factorization.

86994810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 86994810 is about 9327.1008357367. The cubic root of 86994810 is about 443.0959508305.

The spelling of 86994810 in words is "eighty-six million, nine hundred ninety-four thousand, eight hundred ten".