8620913 has 6 divisors (see below), whose sum is σ = 10028466. Its totient is φ = 7389312.

The previous prime is 8620897. The next prime is 8620943. The reversal of 8620913 is 3190268.

It can be written as a sum of positive squares in only one way, i.e., 4528384 + 4092529 = 2128^2 + 2023^2 .

It is not a de Polignac number, because 8620913 - 2⁴ = 8620897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8620943) 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 5 ways as a sum of consecutive naturals, for example, 87920 + ... + 88017.

It is an arithmetic number, because the mean of its divisors is an integer number (1671411).

Almost surely, 2^8620913 is an apocalyptic number.

It is an amenable number.

8620913 is a deficient number, since it is larger than the sum of its proper divisors (1407553).

8620913 is a wasteful number, since it uses less digits than its factorization.

8620913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175951 (or 175944 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 8620913 is about 2936.1391315808. The cubic root of 8620913 is about 205.0458989036.

The spelling of 8620913 in words is "eight million, six hundred twenty thousand, nine hundred thirteen".