7991706 has 8 divisors (see below), whose sum is σ = 15983424. Its totient is φ = 2663900.

The previous prime is 7991701. The next prime is 7991713. The reversal of 7991706 is 6071997.

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

7991706 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7991701) 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, 665970 + ... + 665981.

It is an arithmetic number, because the mean of its divisors is an integer number (1997928).

Almost surely, 2^7991706 is an apocalyptic number.

7991706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7991706 is a wasteful number, since it uses less digits than its factorization.

7991706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331956.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 7991706 is about 2826.9605586212. The cubic root of 7991706 is about 199.9308594340.

The spelling of 7991706 in words is "seven million, nine hundred ninety-one thousand, seven hundred six".