2717985 has 8 divisors (see below), whose sum is σ = 4348800. Its totient is φ = 1449584.

The previous prime is 2717929. The next prime is 2717993. The reversal of 2717985 is 5897172.

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 2717985 - 2⁶ = 2717921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90585 + ... + 90614.

It is an arithmetic number, because the mean of its divisors is an integer number (543600).

2^2717985 is an apocalyptic number.

It is an amenable number.

2717985 is a deficient number, since it is larger than the sum of its proper divisors (1630815).

2717985 is a wasteful number, since it uses less digits than its factorization.

2717985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181207.

The product of its digits is 35280, while the sum is 39.

The square root of 2717985 is about 1648.6312504620. The cubic root of 2717985 is about 139.5561624300.

Subtracting from 2717985 its sum of digits (39), we obtain a triangular number (2717946 = T₂₃₃₁).

It can be divided in two parts, 271 and 7985, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 2717985 in words is "two million, seven hundred seventeen thousand, nine hundred eighty-five".