2610991 has 8 divisors (see below), whose sum is σ = 2706624. Its totient is φ = 2517120.

The previous prime is 2610989. The next prime is 2611001. The reversal of 2610991 is 1990162.

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 2610991 - 2¹ = 2610989 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 (2610901) 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, 3051 + ... + 3811.

It is an arithmetic number, because the mean of its divisors is an integer number (338328).

2^2610991 is an apocalyptic number.

2610991 is a deficient number, since it is larger than the sum of its proper divisors (95633).

2610991 is an equidigital number, since it uses as much as digits as its factorization.

2610991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 2610991 is about 1615.8561198325. The cubic root of 2610991 is about 137.7003756239.

The spelling of 2610991 in words is "two million, six hundred ten thousand, nine hundred ninety-one".