2686766 has 4 divisors (see below), whose sum is σ = 4030152. Its totient is φ = 1343382.

The previous prime is 2686759. The next prime is 2686777. The reversal of 2686766 is 6676862.

Added to its reverse (6676862) it gives a triangular number (9363628 = T₄₃₂₇).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6676862 = 2 ⋅3338431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671690 + ... + 671693.

It is an arithmetic number, because the mean of its divisors is an integer number (1007538).

2^2686766 is an apocalyptic number.

2686766 is a deficient number, since it is larger than the sum of its proper divisors (1343386).

2686766 is a wasteful number, since it uses less digits than its factorization.

2686766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343385.

The product of its digits is 145152, while the sum is 41.

The square root of 2686766 is about 1639.1357478867. The cubic root of 2686766 is about 139.0197856693.

Adding to 2686766 its reverse (6676862), we get a triangular number (9363628 = T₄₃₂₇).

The spelling of 2686766 in words is "two million, six hundred eighty-six thousand, seven hundred sixty-six".