27661007 has 8 divisors (see below), whose sum is σ = 30277632. Its totient is φ = 25061400.

The previous prime is 27661003. The next prime is 27661013. The reversal of 27661007 is 70016672.

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

It is a cyclic number.

It is not a de Polignac number, because 27661007 - 2² = 27661003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27661003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719 + ... + 7472.

It is an arithmetic number, because the mean of its divisors is an integer number (3784704).

Almost surely, 2^27661007 is an apocalyptic number.

27661007 is a deficient number, since it is larger than the sum of its proper divisors (2616625).

27661007 is a wasteful number, since it uses less digits than its factorization.

27661007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8509.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 27661007 is about 5259.3732516337. The cubic root of 27661007 is about 302.4284629235.

Adding to 27661007 its reverse (70016672), we get a palindrome (97677679).

It can be divided in two parts, 2766 and 1007, that added together give a palindrome (3773).

The spelling of 27661007 in words is "twenty-seven million, six hundred sixty-one thousand, seven".