27720077 has 16 divisors (see below), whose sum is σ = 34795392. Its totient is φ = 21453120.

The previous prime is 27720053. The next prime is 27720089. The reversal of 27720077 is 77002772.

It is a cyclic number.

It is not a de Polignac number, because 27720077 - 2¹² = 27715981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10943 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (2174712).

Almost surely, 2^27720077 is an apocalyptic number.

It is an amenable number.

27720077 is a deficient number, since it is larger than the sum of its proper divisors (7075315).

27720077 is a wasteful number, since it uses less digits than its factorization.

27720077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468.

The product of its (nonzero) digits is 9604, while the sum is 32.

The square root of 27720077 is about 5264.9859449005. The cubic root of 27720077 is about 302.6435882306.

It can be divided in two parts, 277200 and 77, that multiplied together give a square (21344400 = 4620²).

The spelling of 27720077 in words is "twenty-seven million, seven hundred twenty thousand, seventy-seven".