2912689 has 8 divisors (see below), whose sum is σ = 3189032. Its totient is φ = 2643840.

The previous prime is 2912683. The next prime is 2912699. The reversal of 2912689 is 9862192.

2912689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 378225 + 2534464 = 615^2 + 1592^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2912689 - 2⁷ = 2912561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2912683) 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 7 ways as a sum of consecutive naturals, for example, 1044 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (398629).

2^2912689 is an apocalyptic number.

It is an amenable number.

2912689 is a deficient number, since it is larger than the sum of its proper divisors (276343).

2912689 is a wasteful number, since it uses less digits than its factorization.

2912689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747.

The product of its digits is 15552, while the sum is 37.

The square root of 2912689 is about 1706.6601887898. The cubic root of 2912689 is about 142.8120013086.

The spelling of 2912689 in words is "two million, nine hundred twelve thousand, six hundred eighty-nine".