27406961 has 12 divisors (see below), whose sum is σ = 28986048. Its totient is φ = 25909224.

The previous prime is 27406957. The next prime is 27406963. The reversal of 27406961 is 16960472.

It is not a de Polignac number, because 27406961 - 2² = 27406957 is a prime.

It is a super-2 number, since 2×27406961² = 1502283022511042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27406963) 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 in 11 ways as a sum of consecutive naturals, for example, 54236 + ... + 54738.

It is an arithmetic number, because the mean of its divisors is an integer number (2415504).

Almost surely, 2^27406961 is an apocalyptic number.

It is an amenable number.

27406961 is a deficient number, since it is larger than the sum of its proper divisors (1579087).

27406961 is a wasteful number, since it uses less digits than its factorization.

27406961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 27406961 is about 5235.1658044421. The cubic root of 27406961 is about 301.4997529395.

The spelling of 27406961 in words is "twenty-seven million, four hundred six thousand, nine hundred sixty-one".