8722629 has 6 divisors (see below), whose sum is σ = 12599366. Its totient is φ = 5815080.

The previous prime is 8722621. The next prime is 8722631. The reversal of 8722629 is 9262278.

8722629 is a `hidden beast` number, since 8 + 7 + 22 + 629 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 3992004 = 2175^2 + 1998^2 .

It is not a de Polignac number, because 8722629 - 2³ = 8722621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8722593 and 8722602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484582 + ... + 484599.

Almost surely, 2^8722629 is an apocalyptic number.

It is an amenable number.

8722629 is a deficient number, since it is larger than the sum of its proper divisors (3876737).

8722629 is a wasteful number, since it uses less digits than its factorization.

8722629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969187 (or 969184 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8722629 is about 2953.4097243694. The cubic root of 8722629 is about 205.8491763700.

The spelling of 8722629 in words is "eight million, seven hundred twenty-two thousand, six hundred twenty-nine".