660122013 has 8 divisors (see below), whose sum is σ = 880283488. Its totient is φ = 440020944.

The previous prime is 660121949. The next prime is 660122039. The reversal of 660122013 is 310221066.

It is a happy number.

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

It is not a de Polignac number, because 660122013 - 2⁶ = 660121949 is a prime.

It is a super-2 number, since 2×660122013² = 871522144094344338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660122083) 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, 27870 + ... + 45792.

It is an arithmetic number, because the mean of its divisors is an integer number (110035436).

Almost surely, 2^660122013 is an apocalyptic number.

It is an amenable number.

660122013 is a deficient number, since it is larger than the sum of its proper divisors (220161475).

660122013 is a wasteful number, since it uses less digits than its factorization.

660122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30203.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 660122013 is about 25692.8397223818. The cubic root of 660122013 is about 870.7124181794.

Adding to 660122013 its reverse (310221066), we get a palindrome (970343079).

The spelling of 660122013 in words is "six hundred sixty million, one hundred twenty-two thousand, thirteen".