2705986 has 4 divisors (see below), whose sum is σ = 4058982. Its totient is φ = 1352992.

The previous prime is 2705981. The next prime is 2705993. The reversal of 2705986 is 6895072.

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

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 32761 = 1635^2 + 181^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 676495 + ... + 676498.

2^2705986 is an apocalyptic number.

2705986 is a deficient number, since it is larger than the sum of its proper divisors (1352996).

2705986 is a wasteful number, since it uses less digits than its factorization.

2705986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352995.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2705986 is about 1644.9881458539. The cubic root of 2705986 is about 139.3504947968.

The spelling of 2705986 in words is "two million, seven hundred five thousand, nine hundred eighty-six".