2691249 has 8 divisors (see below), whose sum is σ = 3914592. Its totient is φ = 1631040.

The previous prime is 2691239. The next prime is 2691251. The reversal of 2691249 is 9421962.

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

It is not a de Polignac number, because 2691249 - 2⁴ = 2691233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 81553 = 2691249 / (2 + 6 + 9 + 1 + 2 + 4 + 9).

It is not an unprimeable number, because it can be changed into a prime (2691209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40744 + ... + 40809.

It is an arithmetic number, because the mean of its divisors is an integer number (489324).

2^2691249 is an apocalyptic number.

It is an amenable number.

2691249 is a deficient number, since it is larger than the sum of its proper divisors (1223343).

2691249 is a wasteful number, since it uses less digits than its factorization.

2691249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81567.

The product of its digits is 7776, while the sum is 33.

The square root of 2691249 is about 1640.5026668677. The cubic root of 2691249 is about 139.0970631338.

The spelling of 2691249 in words is "two million, six hundred ninety-one thousand, two hundred forty-nine".