8622664420 has 12 divisors (see below), whose sum is σ = 18107595324. Its totient is φ = 3449065760.

The previous prime is 8622664411. The next prime is 8622664433. The reversal of 8622664420 is 244662268.

It can be written as a sum of positive squares in 2 ways, for example, as 2559550464 + 6063113956 = 50592^2 + 77866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215566591 + ... + 215566630.

It is an arithmetic number, because the mean of its divisors is an integer number (1508966277).

Almost surely, 2^8622664420 is an apocalyptic number.

It is an amenable number.

8622664420 is an abundant number, since it is smaller than the sum of its proper divisors (9484930904).

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

8622664420 is a wasteful number, since it uses less digits than its factorization.

8622664420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431133230 (or 431133228 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 8622664420 is about 92858.3029136329. The cubic root of 8622664420 is about 2050.5978363455.

The spelling of 8622664420 in words is "eight billion, six hundred twenty-two million, six hundred sixty-four thousand, four hundred twenty".