2661012 has 60 divisors (see below), whose sum is σ = 7155456. Its totient is φ = 861840.

The previous prime is 2660989. The next prime is 2661013. The reversal of 2661012 is 2101662.

It is a happy number.

2661012 is a `hidden beast` number, since 2 + 661 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661013) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13837 + ... + 14027.

2^2661012 is an apocalyptic number.

2661012 is the 1032-nd heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2661012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3577728).

2661012 is an abundant number, since it is smaller than the sum of its proper divisors (4494444).

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

2661012 is a wasteful number, since it uses less digits than its factorization.

2661012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2661012 is about 1631.2608620328. The cubic root of 2661012 is about 138.5741673337.

Adding to 2661012 its reverse (2101662), we get a palindrome (4762674).

The spelling of 2661012 in words is "two million, six hundred sixty-one thousand, twelve".