8081651 has 4 divisors (see below), whose sum is σ = 8300112. Its totient is φ = 7863192.

The previous prime is 8081641. The next prime is 8081653. The reversal of 8081651 is 1561808.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8081651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8081653) 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, 109175 + ... + 109248.

It is an arithmetic number, because the mean of its divisors is an integer number (2075028).

Almost surely, 2^8081651 is an apocalyptic number.

8081651 is a deficient number, since it is larger than the sum of its proper divisors (218461).

8081651 is a wasteful number, since it uses less digits than its factorization.

8081651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218460.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 8081651 is about 2842.8244757635. The cubic root of 8081651 is about 200.6781231464.

The spelling of 8081651 in words is "eight million, eighty-one thousand, six hundred fifty-one".