27216761 has 16 divisors (see below), whose sum is σ = 33082560. Its totient is φ = 22048320.

The previous prime is 27216731. The next prime is 27216767. The reversal of 27216761 is 16761272.

It is a cyclic number.

It is not a de Polignac number, because 27216761 - 2⁶ = 27216697 is a prime.

It is a super-2 number, since 2×27216761² = 1481504158662242, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27216767) 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, 866 + ... + 7428.

It is an arithmetic number, because the mean of its divisors is an integer number (2067660).

Almost surely, 2^27216761 is an apocalyptic number.

It is an amenable number.

27216761 is a deficient number, since it is larger than the sum of its proper divisors (5865799).

27216761 is a wasteful number, since it uses less digits than its factorization.

27216761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616.

The product of its digits is 7056, while the sum is 32.

The square root of 27216761 is about 5216.9685642143. The cubic root of 27216761 is about 300.8006796577.

The spelling of 27216761 in words is "twenty-seven million, two hundred sixteen thousand, seven hundred sixty-one".