60781389 has 4 divisors (see below), whose sum is σ = 81041856. Its totient is φ = 40520924.

The previous prime is 60781373. The next prime is 60781453. The reversal of 60781389 is 98318706.

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 60781389 - 2⁴ = 60781373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60781389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60781309) 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, 10130229 + ... + 10130234.

It is an arithmetic number, because the mean of its divisors is an integer number (20260464).

Almost surely, 2^60781389 is an apocalyptic number.

It is an amenable number.

60781389 is a deficient number, since it is larger than the sum of its proper divisors (20260467).

60781389 is a wasteful number, since it uses less digits than its factorization.

60781389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20260466.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 60781389 is about 7796.2419793129. The cubic root of 60781389 is about 393.1789031952.

The spelling of 60781389 in words is "sixty million, seven hundred eighty-one thousand, three hundred eighty-nine".