8621723 has 4 divisors (see below), whose sum is σ = 9405528. Its totient is φ = 7837920.

The previous prime is 8621707. The next prime is 8621747. The reversal of 8621723 is 3271268.

It is a happy number.

8621723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8621723 - 2⁴ = 8621707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8621773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391886 + ... + 391907.

It is an arithmetic number, because the mean of its divisors is an integer number (2351382).

Almost surely, 2^8621723 is an apocalyptic number.

8621723 is a deficient number, since it is larger than the sum of its proper divisors (783805).

8621723 is a wasteful number, since it uses less digits than its factorization.

8621723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783804.

The product of its digits is 4032, while the sum is 29.

The square root of 8621723 is about 2936.2770645837. The cubic root of 8621723 is about 205.0523205737.

It can be divided in two parts, 862 and 1723, that multiplied together give a triangular number (1485226 = T₁₇₂₃).

The spelling of 8621723 in words is "eight million, six hundred twenty-one thousand, seven hundred twenty-three".