8073691 has 4 divisors (see below), whose sum is σ = 8548632. Its totient is φ = 7598752.

The previous prime is 8073647. The next prime is 8073749. The reversal of 8073691 is 1963708.

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-8073691 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (8073641) 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, 237445 + ... + 237478.

It is an arithmetic number, because the mean of its divisors is an integer number (2137158).

Almost surely, 2^8073691 is an apocalyptic number.

8073691 is a deficient number, since it is larger than the sum of its proper divisors (474941).

8073691 is a wasteful number, since it uses less digits than its factorization.

8073691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474940.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 8073691 is about 2841.4241147706. The cubic root of 8073691 is about 200.6122157141.

The spelling of 8073691 in words is "eight million, seventy-three thousand, six hundred ninety-one".