27690001 has 2 divisors, whose sum is σ = 27690002. Its totient is φ = 27690000.

The previous prime is 27689971. The next prime is 27690031. The reversal of 27690001 is 10009672.

It is a balanced prime because it is at equal distance from previous prime (27689971) and next prime (27690031).

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 389376 = 5225^2 + 624^2 .

It is a cyclic number.

It is not a de Polignac number, because 27690001 - 2⁵ = 27689969 is a prime.

It is not a weakly prime, because it can be changed into another prime (27690031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13845000 + 13845001.

It is an arithmetic number, because the mean of its divisors is an integer number (13845001).

Almost surely, 2^27690001 is an apocalyptic number.

It is an amenable number.

27690001 is a deficient number, since it is larger than the sum of its proper divisors (1).

27690001 is an equidigital number, since it uses as much as digits as its factorization.

27690001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 27690001 is about 5262.1289417877. The cubic root of 27690001 is about 302.5340935550.

Adding to 27690001 its reverse (10009672), we get a palindrome (37699673).

The spelling of 27690001 in words is "twenty-seven million, six hundred ninety thousand, one".