2759991 has 8 divisors (see below), whose sum is σ = 3963120. Its totient is φ = 1698432.

The previous prime is 2759971. The next prime is 2760013. The reversal of 2759991 is 1999572.

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

It is not a de Polignac number, because 2759991 - 2⁹ = 2759479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2759951) 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, 35346 + ... + 35423.

It is an arithmetic number, because the mean of its divisors is an integer number (495390).

2^2759991 is an apocalyptic number.

2759991 is a deficient number, since it is larger than the sum of its proper divisors (1203129).

2759991 is a wasteful number, since it uses less digits than its factorization.

2759991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70785.

The product of its digits is 51030, while the sum is 42.

The square root of 2759991 is about 1661.3220638997. The cubic root of 2759991 is about 140.2714292007.

The spelling of 2759991 in words is "two million, seven hundred fifty-nine thousand, nine hundred ninety-one".