2601987 has 8 divisors (see below), whose sum is σ = 3493200. Its totient is φ = 1722720.

The previous prime is 2601979. The next prime is 2601997. The reversal of 2601987 is 7891062.

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

It is not a de Polignac number, because 2601987 - 2³ = 2601979 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2601987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2601997) 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, 2464 + ... + 3357.

It is an arithmetic number, because the mean of its divisors is an integer number (436650).

2^2601987 is an apocalyptic number.

2601987 is a deficient number, since it is larger than the sum of its proper divisors (891213).

2601987 is a wasteful number, since it uses less digits than its factorization.

2601987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2601987 is about 1613.0675745300. The cubic root of 2601987 is about 137.5419067857.

It can be divided in two parts, 26019 and 87, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 2601987 in words is "two million, six hundred one thousand, nine hundred eighty-seven".