2651166 has 48 divisors (see below), whose sum is σ = 6705504. Its totient is φ = 741312.

The previous prime is 2651137. The next prime is 2651189. The reversal of 2651166 is 6611562.

It is a happy number.

2651166 is a `hidden beast` number, since 2 + 651 + 1 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6480 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (139698).

2^2651166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3352752).

2651166 is an abundant number, since it is smaller than the sum of its proper divisors (4054338).

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

2651166 is a wasteful number, since it uses less digits than its factorization.

2651166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 462 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 2651166 is about 1628.2401542770. The cubic root of 2651166 is about 138.4030435251.

It can be divided in two parts, 265 and 1166, that added together give a triangular number (1431 = T₅₃).

The spelling of 2651166 in words is "two million, six hundred fifty-one thousand, one hundred sixty-six".