63432609 has 4 divisors (see below), whose sum is σ = 84576816. Its totient is φ = 42288404.

The previous prime is 63432601. The next prime is 63432613. The reversal of 63432609 is 90623436.

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 63432609 - 2³ = 63432601 is a prime.

It is a super-3 number, since 3×63432609³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63432609.

It is not an unprimeable number, because it can be changed into a prime (63432601) 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, 10572099 + ... + 10572104.

It is an arithmetic number, because the mean of its divisors is an integer number (21144204).

Almost surely, 2^63432609 is an apocalyptic number.

It is an amenable number.

63432609 is a deficient number, since it is larger than the sum of its proper divisors (21144207).

63432609 is a wasteful number, since it uses less digits than its factorization.

63432609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21144206.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 63432609 is about 7964.4591153449. The cubic root of 63432609 is about 398.8144249177.

The spelling of 63432609 in words is "sixty-three million, four hundred thirty-two thousand, six hundred nine".