2661830 has 8 divisors (see below), whose sum is σ = 4791312. Its totient is φ = 1064728.

The previous prime is 2661821. The next prime is 2661833. The reversal of 2661830 is 381662.

2661830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2661830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661833) 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 3 ways as a sum of consecutive naturals, for example, 133082 + ... + 133101.

It is an arithmetic number, because the mean of its divisors is an integer number (598914).

2^2661830 is an apocalyptic number.

2661830 is a deficient number, since it is larger than the sum of its proper divisors (2129482).

2661830 is a wasteful number, since it uses less digits than its factorization.

2661830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266190.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2661830 is about 1631.5115690672. The cubic root of 2661830 is about 138.5883651973.

The spelling of 2661830 in words is "two million, six hundred sixty-one thousand, eight hundred thirty".