2957689 has 8 divisors (see below), whose sum is σ = 3449600. Its totient is φ = 2534868.

The previous prime is 2957687. The next prime is 2957753. The reversal of 2957689 is 9867592.

2957689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2957689 - 2¹ = 2957687 is a prime.

It is an Ulam number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2957683) 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, 3969 + ... + 4654.

It is an arithmetic number, because the mean of its divisors is an integer number (431200).

2^2957689 is an apocalyptic number.

It is an amenable number.

2957689 is a deficient number, since it is larger than the sum of its proper divisors (491911).

2957689 is an frugal number, since it uses more digits than its factorization.

2957689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8644 (or 8630 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 2957689 is about 1719.7933015336. The cubic root of 2957689 is about 143.5437106580.

Subtracting 2957689 from its reverse (9867592), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2957689 in words is "two million, nine hundred fifty-seven thousand, six hundred eighty-nine".