2721694 has 4 divisors (see below), whose sum is σ = 4082544. Its totient is φ = 1360846.

The previous prime is 2721671. The next prime is 2721701. The reversal of 2721694 is 4961272.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

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, 680422 + ... + 680425.

It is an arithmetic number, because the mean of its divisors is an integer number (1020636).

2^2721694 is an apocalyptic number.

2721694 is a deficient number, since it is larger than the sum of its proper divisors (1360850).

2721694 is a wasteful number, since it uses less digits than its factorization.

2721694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360849.

The product of its digits is 6048, while the sum is 31.

The square root of 2721694 is about 1649.7557394960. The cubic root of 2721694 is about 139.6196136677.

The spelling of 2721694 in words is "two million, seven hundred twenty-one thousand, six hundred ninety-four".