27640077 has 8 divisors (see below), whose sum is σ = 36891264. Its totient is φ = 18407808.

The previous prime is 27640057. The next prime is 27640141. The reversal of 27640077 is 77004672.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27640077 - 2⁷ = 27639949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27640057) 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 7 ways as a sum of consecutive naturals, for example, 868 + ... + 7485.

It is an arithmetic number, because the mean of its divisors is an integer number (4611408).

Almost surely, 2^27640077 is an apocalyptic number.

It is an amenable number.

27640077 is a deficient number, since it is larger than the sum of its proper divisors (9251187).

27640077 is a wasteful number, since it uses less digits than its factorization.

27640077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459.

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 27640077 is about 5257.3830942780. The cubic root of 27640077 is about 302.3521650877.

The spelling of 27640077 in words is "twenty-seven million, six hundred forty thousand, seventy-seven".