2923661 has 4 divisors (see below), whose sum is σ = 3148572. Its totient is φ = 2698752.

The previous prime is 2923651. The next prime is 2923727. The reversal of 2923661 is 1663292.

2923661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 302500 + 2621161 = 550^2 + 1619^2 .

It is a cyclic number.

It is not a de Polignac number, because 2923661 - 2⁶ = 2923597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2923651) 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, 112436 + ... + 112461.

It is an arithmetic number, because the mean of its divisors is an integer number (787143).

2^2923661 is an apocalyptic number.

It is an amenable number.

2923661 is a deficient number, since it is larger than the sum of its proper divisors (224911).

2923661 is a wasteful number, since it uses less digits than its factorization.

2923661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224910.

The product of its digits is 3888, while the sum is 29.

The square root of 2923661 is about 1709.8716326087. The cubic root of 2923661 is about 142.9910992553.

The spelling of 2923661 in words is "two million, nine hundred twenty-three thousand, six hundred sixty-one".