2166774 has 16 divisors (see below), whose sum is σ = 4354560. Its totient is φ = 718760.

The previous prime is 2166763. The next prime is 2166797. The reversal of 2166774 is 4776612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (272160).

2^2166774 is an apocalyptic number.

2166774 is an abundant number, since it is smaller than the sum of its proper divisors (2187786).

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

2166774 is a wasteful number, since it uses less digits than its factorization.

2166774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755.

The product of its digits is 14112, while the sum is 33.

The square root of 2166774 is about 1471.9966032570. The cubic root of 2166774 is about 129.4010713170.

It can be divided in two parts, 21 and 66774, that added together give a triangular number (66795 = T₃₆₅).

The spelling of 2166774 in words is "two million, one hundred sixty-six thousand, seven hundred seventy-four".