60138649 has 4 divisors (see below), whose sum is σ = 60154164. Its totient is φ = 60123136.

The previous prime is 60138647. The next prime is 60138763. The reversal of 60138649 is 94683106.

60138649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 can be written as a sum of positive squares in 2 ways, for example, as 29811600 + 30327049 = 5460^2 + 5507^2 .

It is a cyclic number.

It is not a de Polignac number, because 60138649 - 2¹ = 60138647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60138643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3609 + ... + 11545.

It is an arithmetic number, because the mean of its divisors is an integer number (15038541).

Almost surely, 2^60138649 is an apocalyptic number.

It is an amenable number.

60138649 is a deficient number, since it is larger than the sum of its proper divisors (15515).

60138649 is an equidigital number, since it uses as much as digits as its factorization.

60138649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15514.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 60138649 is about 7754.9112825357. The cubic root of 60138649 is about 391.7880835177.

The spelling of 60138649 in words is "sixty million, one hundred thirty-eight thousand, six hundred forty-nine".