8018645 has 16 divisors (see below), whose sum is σ = 10542960. Its totient is φ = 5827584.

The previous prime is 8018639. The next prime is 8018671. The reversal of 8018645 is 5468108.

It can be written as a sum of positive squares in 8 ways, for example, as 1495729 + 6522916 = 1223^2 + 2554^2 .

It is a cyclic number.

It is not a de Polignac number, because 8018645 - 2⁴ = 8018629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839 + ... + 4091.

It is an arithmetic number, because the mean of its divisors is an integer number (658935).

Almost surely, 2^8018645 is an apocalyptic number.

8018645 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8018645 is a deficient number, since it is larger than the sum of its proper divisors (2524315).

8018645 is a wasteful number, since it uses less digits than its factorization.

8018645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 8018645 is about 2831.7212080288. The cubic root of 8018645 is about 200.1552544491.

The spelling of 8018645 in words is "eight million, eighteen thousand, six hundred forty-five".