20527697 has 4 divisors (see below), whose sum is σ = 20540016. Its totient is φ = 20515380.

The previous prime is 20527691. The next prime is 20527699. The reversal of 20527697 is 79672502.

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 cyclic number.

It is not a de Polignac number, because 20527697 - 2¹⁰ = 20526673 is a prime.

It is a super-3 number, since 3×20527697³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20527697.

It is not an unprimeable number, because it can be changed into a prime (20527691) 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, 3179 + ... + 7152.

It is an arithmetic number, because the mean of its divisors is an integer number (5135004).

Almost surely, 2^20527697 is an apocalyptic number.

It is an amenable number.

20527697 is a deficient number, since it is larger than the sum of its proper divisors (12319).

20527697 is a wasteful number, since it uses less digits than its factorization.

20527697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12318.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 20527697 is about 4530.7501586382. The cubic root of 20527697 is about 273.8083845085.

The spelling of 20527697 in words is "twenty million, five hundred twenty-seven thousand, six hundred ninety-seven".