660022051 has 8 divisors (see below), whose sum is σ = 711011504. Its totient is φ = 609063840.

The previous prime is 660021997. The next prime is 660022079. The reversal of 660022051 is 150220066.

660022051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660022051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660022151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54580 + ... + 65566.

It is an arithmetic number, because the mean of its divisors is an integer number (88876438).

Almost surely, 2^660022051 is an apocalyptic number.

660022051 is a deficient number, since it is larger than the sum of its proper divisors (50989453).

660022051 is a wasteful number, since it uses less digits than its factorization.

660022051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15621.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 660022051 is about 25690.8943207511. The cubic root of 660022051 is about 870.6684654218.

The spelling of 660022051 in words is "six hundred sixty million, twenty-two thousand, fifty-one".