60648909 has 4 divisors (see below), whose sum is σ = 80865216. Its totient is φ = 40432604.

The previous prime is 60648857. The next prime is 60648923. The reversal of 60648909 is 90984606.

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 60648909 - 2⁷ = 60648781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60648109) 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 3 ways as a sum of consecutive naturals, for example, 10108149 + ... + 10108154.

It is an arithmetic number, because the mean of its divisors is an integer number (20216304).

Almost surely, 2^60648909 is an apocalyptic number.

It is an amenable number.

60648909 is a deficient number, since it is larger than the sum of its proper divisors (20216307).

60648909 is a wasteful number, since it uses less digits than its factorization.

60648909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20216306.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 60648909 is about 7787.7409433031. The cubic root of 60648909 is about 392.8930359146.

The spelling of 60648909 in words is "sixty million, six hundred forty-eight thousand, nine hundred nine".