8687406 has 48 divisors (see below), whose sum is σ = 21775824. Its totient is φ = 2290176.

The previous prime is 8687401. The next prime is 8687423. The reversal of 8687406 is 6047868.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8687401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2686 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (453663).

Almost surely, 2^8687406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8687406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10887912).

8687406 is an abundant number, since it is smaller than the sum of its proper divisors (13088418).

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

8687406 is a wasteful number, since it uses less digits than its factorization.

8687406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305 (or 2298 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 8687406 is about 2947.4405846429. The cubic root of 8687406 is about 205.5717215217.

The spelling of 8687406 in words is "eight million, six hundred eighty-seven thousand, four hundred six".