8720622 has 20 divisors (see below), whose sum is σ = 19541016. Its totient is φ = 2906820.

The previous prime is 8720617. The next prime is 8720623. The reversal of 8720622 is 2260278.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26754 + ... + 27077.

Almost surely, 2^8720622 is an apocalyptic number.

8720622 is an abundant number, since it is smaller than the sum of its proper divisors (10820394).

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

8720622 is a wasteful number, since it uses less digits than its factorization.

8720622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53845 (or 53836 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8720622 is about 2953.0699280579. The cubic root of 8720622 is about 205.8333871323.

The spelling of 8720622 in words is "eight million, seven hundred twenty thousand, six hundred twenty-two".