27700001 has 4 divisors (see below), whose sum is σ = 31657152. Its totient is φ = 23742852.

The previous prime is 27699977. The next prime is 27700003. The reversal of 27700001 is 10000772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-27700001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27700003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978565 + ... + 1978578.

It is an arithmetic number, because the mean of its divisors is an integer number (7914288).

Almost surely, 2^27700001 is an apocalyptic number.

It is an amenable number.

27700001 is a deficient number, since it is larger than the sum of its proper divisors (3957151).

27700001 is an equidigital number, since it uses as much as digits as its factorization.

27700001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957150.

The product of its (nonzero) digits is 98, while the sum is 17.

The square root of 27700001 is about 5263.0790417777. The cubic root of 27700001 is about 302.5705083463.

Adding to 27700001 its reverse (10000772), we get a palindrome (37700773).

The spelling of 27700001 in words is "twenty-seven million, seven hundred thousand, one".