2661270 has 32 divisors (see below), whose sum is σ = 6538752. Its totient is φ = 692832.

The previous prime is 2661251. The next prime is 2661271. The reversal of 2661270 is 721662.

It is a happy number.

2661270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2661270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259 + ... + 2321.

It is an arithmetic number, because the mean of its divisors is an integer number (204336).

2^2661270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2661270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3269376).

2661270 is an abundant number, since it is smaller than the sum of its proper divisors (3877482).

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

2661270 is a wasteful number, since it uses less digits than its factorization.

2661270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2661270 is about 1631.3399400493. The cubic root of 2661270 is about 138.5786457026.

Adding to 2661270 its product of nonzero digits (1008), we get a triangular number (2662278 = T₂₃₀₇).

The spelling of 2661270 in words is "two million, six hundred sixty-one thousand, two hundred seventy".