2116690 has 16 divisors (see below), whose sum is σ = 3976128. Its totient is φ = 809776.

The previous prime is 2116679. The next prime is 2116691. The reversal of 2116690 is 966112.

It is a super-2 number, since 2×2116690² = 8960753112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2116691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4372 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (248508).

2^2116690 is an apocalyptic number.

2116690 is a deficient number, since it is larger than the sum of its proper divisors (1859438).

2116690 is a wasteful number, since it uses less digits than its factorization.

2116690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9233.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2116690 is about 1454.8848751705. The cubic root of 2116690 is about 128.3962735434.

The spelling of 2116690 in words is "two million, one hundred sixteen thousand, six hundred ninety".