2765987 has 4 divisors (see below), whose sum is σ = 3161136. Its totient is φ = 2370840.

The previous prime is 2765977. The next prime is 2766007. The reversal of 2765987 is 7895672.

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 2765987 - 2⁸ = 2765731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2765927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197564 + ... + 197577.

It is an arithmetic number, because the mean of its divisors is an integer number (790284).

2^2765987 is an apocalyptic number.

2765987 is a deficient number, since it is larger than the sum of its proper divisors (395149).

2765987 is an equidigital number, since it uses as much as digits as its factorization.

2765987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395148.

The product of its digits is 211680, while the sum is 44.

The square root of 2765987 is about 1663.1256717398. The cubic root of 2765987 is about 140.3729342610.

The spelling of 2765987 in words is "two million, seven hundred sixty-five thousand, nine hundred eighty-seven".