8720606 has 4 divisors (see below), whose sum is σ = 13080912. Its totient is φ = 4360302.

The previous prime is 8720597. The next prime is 8720617. The reversal of 8720606 is 6060278.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2180150 + ... + 2180153.

It is an arithmetic number, because the mean of its divisors is an integer number (3270228).

Almost surely, 2^8720606 is an apocalyptic number.

8720606 is a deficient number, since it is larger than the sum of its proper divisors (4360306).

8720606 is a wasteful number, since it uses less digits than its factorization.

8720606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360305.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 8720606 is about 2953.0672190114. The cubic root of 8720606 is about 205.8332612492.

The spelling of 8720606 in words is "eight million, seven hundred twenty thousand, six hundred six".