1660623313 has 8 divisors (see below), whose sum is σ = 1776681920. Its totient is φ = 1547430480.

The previous prime is 1660623301. The next prime is 1660623319. The reversal of 1660623313 is 3133260661.

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

It is a cyclic number.

It is not a de Polignac number, because 1660623313 - 2⁵ = 1660623281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660623319) 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 7 ways as a sum of consecutive naturals, for example, 715245 + ... + 717562.

It is an arithmetic number, because the mean of its divisors is an integer number (222085240).

Almost surely, 2^1660623313 is an apocalyptic number.

It is an amenable number.

1660623313 is a deficient number, since it is larger than the sum of its proper divisors (116058607).

1660623313 is a wasteful number, since it uses less digits than its factorization.

1660623313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432887.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1660623313 is about 40750.7461649477. The cubic root of 1660623313 is about 1184.1963283155.

Adding to 1660623313 its reverse (3133260661), we get a palindrome (4793883974).

The spelling of 1660623313 in words is "one billion, six hundred sixty million, six hundred twenty-three thousand, three hundred thirteen".