60919861 has 4 divisors (see below), whose sum is σ = 60938892. Its totient is φ = 60900832.

The previous prime is 60919853. The next prime is 60919879. The reversal of 60919861 is 16891906.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10595025 + 50324836 = 3255^2 + 7094^2 .

It is a cyclic number.

It is not a de Polignac number, because 60919861 - 2³ = 60919853 is a prime.

It is a super-2 number, since 2×60919861² = 7422458928518642, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60919841) 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, 3406 + ... + 11551.

It is an arithmetic number, because the mean of its divisors is an integer number (15234723).

Almost surely, 2^60919861 is an apocalyptic number.

It is an amenable number.

60919861 is a deficient number, since it is larger than the sum of its proper divisors (19031).

60919861 is a wasteful number, since it uses less digits than its factorization.

60919861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19030.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 60919861 is about 7805.1176160260. The cubic root of 60919861 is about 393.4772564537.

The spelling of 60919861 in words is "sixty million, nine hundred nineteen thousand, eight hundred sixty-one".