8621667 has 8 divisors (see below), whose sum is σ = 12772880. Its totient is φ = 5747760.

The previous prime is 8621653. The next prime is 8621677. The reversal of 8621667 is 7661268.

It is a happy number.

It is not a de Polignac number, because 8621667 - 2⁸ = 8621411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8621617) 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 7 ways as a sum of consecutive naturals, for example, 159634 + ... + 159687.

It is an arithmetic number, because the mean of its divisors is an integer number (1596610).

Almost surely, 2^8621667 is an apocalyptic number.

8621667 is a deficient number, since it is larger than the sum of its proper divisors (4151213).

8621667 is a wasteful number, since it uses less digits than its factorization.

8621667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319330 (or 319324 counting only the distinct ones).

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

The square root of 8621667 is about 2936.2675286833. The cubic root of 8621667 is about 205.0518766193.

The spelling of 8621667 in words is "eight million, six hundred twenty-one thousand, six hundred sixty-seven".