60806821 has 4 divisors (see below), whose sum is σ = 64007200. Its totient is φ = 57606444.

The previous prime is 60806819. The next prime is 60806831. The reversal of 60806821 is 12860806.

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 60806821 - 2¹ = 60806819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60806831) 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, 1600161 + ... + 1600198.

It is an arithmetic number, because the mean of its divisors is an integer number (16001800).

Almost surely, 2^60806821 is an apocalyptic number.

It is an amenable number.

60806821 is a deficient number, since it is larger than the sum of its proper divisors (3200379).

60806821 is a wasteful number, since it uses less digits than its factorization.

60806821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200378.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 60806821 is about 7797.8728509767. The cubic root of 60806821 is about 393.2337332000.

The spelling of 60806821 in words is "sixty million, eight hundred six thousand, eight hundred twenty-one".