2687966 has 4 divisors (see below), whose sum is σ = 4031952. Its totient is φ = 1343982.

The previous prime is 2687957. The next prime is 2687969. The reversal of 2687966 is 6697862.

2687966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×2687966² = 14450322434312, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁷ + 6 + 8³ + 7⁷ + 9⁴ + 6⁶ + 6⁸ .

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671990 + ... + 671993.

It is an arithmetic number, because the mean of its divisors is an integer number (1007988).

2^2687966 is an apocalyptic number.

2687966 is a deficient number, since it is larger than the sum of its proper divisors (1343986).

2687966 is a wasteful number, since it uses less digits than its factorization.

2687966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343985.

The product of its digits is 217728, while the sum is 44.

The square root of 2687966 is about 1639.5017535825. The cubic root of 2687966 is about 139.0404795583.

The spelling of 2687966 in words is "two million, six hundred eighty-seven thousand, nine hundred sixty-six".