60686979 has 4 divisors (see below), whose sum is σ = 80915976. Its totient is φ = 40457984.

The previous prime is 60686971. The next prime is 60686999. The reversal of 60686979 is 97968606.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 60686979 - 2³ = 60686971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60686971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10114494 + ... + 10114499.

It is an arithmetic number, because the mean of its divisors is an integer number (20228994).

Almost surely, 2^60686979 is an apocalyptic number.

60686979 is a deficient number, since it is larger than the sum of its proper divisors (20228997).

60686979 is a wasteful number, since it uses less digits than its factorization.

60686979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20228996.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 60686979 is about 7790.1847859983. The cubic root of 60686979 is about 392.9752265072.

The spelling of 60686979 in words is "sixty million, six hundred eighty-six thousand, nine hundred seventy-nine".