1660201507 has 8 divisors (see below), whose sum is σ = 1705600512. Its totient is φ = 1614830400.

The previous prime is 1660201481. The next prime is 1660201579. The reversal of 1660201507 is 7051020661.

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-1660201507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1660301507) 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, 183582 + ... + 192412.

It is an arithmetic number, because the mean of its divisors is an integer number (213200064).

Almost surely, 2^1660201507 is an apocalyptic number.

1660201507 is a deficient number, since it is larger than the sum of its proper divisors (45399005).

1660201507 is an equidigital number, since it uses as much as digits as its factorization.

1660201507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1660201507 is about 40745.5703972837. The cubic root of 1660201507 is about 1184.0960560442.

The spelling of 1660201507 in words is "one billion, six hundred sixty million, two hundred one thousand, five hundred seven".