6609527401 has 3 divisors (see below), whose sum is σ = 6609608701. Its totient is φ = 6609446102.

The previous prime is 6609527363. The next prime is 6609527437. The reversal of 6609527401 is 1047259066.

The square root of 6609527401 is 81299.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6609527401 - 2¹³ = 6609519209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6609527471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 40650 + ... + 121948.

Almost surely, 2^6609527401 is an apocalyptic number.

6609527401 is the 81299-th square number.

6609527401 is the 40650-th centered octagonal number.

It is an amenable number.

6609527401 is a deficient number, since it is larger than the sum of its proper divisors (81300).

6609527401 is an frugal number, since it uses more digits than its factorization.

6609527401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162598 (or 81299 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The cubic root of 6609527401 is about 1876.6796115061.

The spelling of 6609527401 in words is "six billion, six hundred nine million, five hundred twenty-seven thousand, four hundred one".