8215801 has 4 divisors (see below), whose sum is σ = 8962704. Its totient is φ = 7468900.

The previous prime is 8215799. The next prime is 8215829. The reversal of 8215801 is 1085128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8215801 - 2¹ = 8215799 is a prime.

It is a Duffinian number.

8215801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8215841) 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, 373435 + ... + 373456.

It is an arithmetic number, because the mean of its divisors is an integer number (2240676).

Almost surely, 2^8215801 is an apocalyptic number.

It is an amenable number.

8215801 is a deficient number, since it is larger than the sum of its proper divisors (746903).

8215801 is a wasteful number, since it uses less digits than its factorization.

8215801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746902.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 8215801 is about 2866.3218591079. The cubic root of 8215801 is about 201.7824095584.

The spelling of 8215801 in words is "eight million, two hundred fifteen thousand, eight hundred one".