7161999 has 16 divisors (see below), whose sum is σ = 10332000. Its totient is φ = 4386816.

The previous prime is 7161997. The next prime is 7162007. The reversal of 7161999 is 9991617.

7161999 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7161999 - 2¹ = 7161997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7161999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7161991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15727 + ... + 16175.

It is an arithmetic number, because the mean of its divisors is an integer number (645750).

Almost surely, 2^7161999 is an apocalyptic number.

7161999 is a deficient number, since it is larger than the sum of its proper divisors (3170001).

7161999 is a wasteful number, since it uses less digits than its factorization.

7161999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its digits is 30618, while the sum is 42.

The square root of 7161999 is about 2676.1911366717. The cubic root of 7161999 is about 192.7575593268.

The spelling of 7161999 in words is "seven million, one hundred sixty-one thousand, nine hundred ninety-nine".