660056629 has 4 divisors (see below), whose sum is σ = 662309676. Its totient is φ = 657803584.

The previous prime is 660056627. The next prime is 660056633. The reversal of 660056629 is 926650066.

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 366722500 + 293334129 = 19150^2 + 17127^2 .

It is a cyclic number.

It is not a de Polignac number, because 660056629 - 2¹ = 660056627 is a prime.

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 junction number, because it is equal to n+sod(n) for n = 660056591 and 660056600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660056627) 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, 1126084 + ... + 1126669.

It is an arithmetic number, because the mean of its divisors is an integer number (165577419).

Almost surely, 2^660056629 is an apocalyptic number.

It is an amenable number.

660056629 is a deficient number, since it is larger than the sum of its proper divisors (2253047).

660056629 is a wasteful number, since it uses less digits than its factorization.

660056629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253046.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 660056629 is about 25691.5672741077. The cubic root of 660056629 is about 870.6836696857.

The spelling of 660056629 in words is "six hundred sixty million, fifty-six thousand, six hundred twenty-nine".