2925661 has 4 divisors (see below), whose sum is σ = 2929500. Its totient is φ = 2921824.

The previous prime is 2925641. The next prime is 2925679. The reversal of 2925661 is 1665292.

2925661 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2295225 + 630436 = 1515^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2925661 - 2⁹ = 2925149 is a prime.

It is a Duffinian number.

2925661 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2925631) 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, 346 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (732375).

2^2925661 is an apocalyptic number.

It is an amenable number.

2925661 is a deficient number, since it is larger than the sum of its proper divisors (3839).

2925661 is a wasteful number, since it uses less digits than its factorization.

2925661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838.

The product of its digits is 6480, while the sum is 31.

The square root of 2925661 is about 1710.4563718493. The cubic root of 2925661 is about 143.0236973133.

The spelling of 2925661 in words is "two million, nine hundred twenty-five thousand, six hundred sixty-one".