660263023 has 4 divisors (see below), whose sum is σ = 754586320. Its totient is φ = 565939728.

The previous prime is 660263011. The next prime is 660263077. The reversal of 660263023 is 320362066.

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

It is a cyclic number.

It is not a de Polignac number, because 660263023 - 2⁵ = 660262991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 660262982 and 660263000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660213023) 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, 47161638 + ... + 47161651.

It is an arithmetic number, because the mean of its divisors is an integer number (188646580).

Almost surely, 2^660263023 is an apocalyptic number.

660263023 is a deficient number, since it is larger than the sum of its proper divisors (94323297).

660263023 is an equidigital number, since it uses as much as digits as its factorization.

660263023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94323296.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 660263023 is about 25695.5837256132. The cubic root of 660263023 is about 870.7744119797.

The spelling of 660263023 in words is "six hundred sixty million, two hundred sixty-three thousand, twenty-three".