8620381 has 8 divisors (see below), whose sum is σ = 10747584. Its totient is φ = 6717120.

The previous prime is 8620369. The next prime is 8620393. The reversal of 8620381 is 1830268.

It is an interprime number because it is at equal distance from previous prime (8620369) and next prime (8620393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8620381 - 2⁵ = 8620349 is a prime.

It is a super-2 number, since 2×8620381² = 148621937170322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8620361) 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, 55900 + ... + 56053.

It is an arithmetic number, because the mean of its divisors is an integer number (1343448).

Almost surely, 2^8620381 is an apocalyptic number.

It is an amenable number.

8620381 is a deficient number, since it is larger than the sum of its proper divisors (2127203).

8620381 is a wasteful number, since it uses less digits than its factorization.

8620381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111971.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8620381 is about 2936.0485350212. The cubic root of 8620381 is about 205.0416809953.

The spelling of 8620381 in words is "eight million, six hundred twenty thousand, three hundred eighty-one".