2602991 has 4 divisors (see below), whose sum is σ = 2616672. Its totient is φ = 2589312.

The previous prime is 2602973. The next prime is 2602993. The reversal of 2602991 is 1992062.

2602991 = T₅₈ + T₅₉ + ... + T₂₅₀.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2602991 - 2⁶ = 2602927 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 (2602993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6551 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (654168).

2^2602991 is an apocalyptic number.

2602991 is a deficient number, since it is larger than the sum of its proper divisors (13681).

2602991 is a wasteful number, since it uses less digits than its factorization.

2602991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13680.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2602991 is about 1613.3787528042. The cubic root of 2602991 is about 137.5595951033.

The spelling of 2602991 in words is "two million, six hundred two thousand, nine hundred ninety-one".