660160537 has 2 divisors, whose sum is σ = 660160538. Its totient is φ = 660160536.

The previous prime is 660160511. The next prime is 660160547. The reversal of 660160537 is 735061066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403648281 + 256512256 = 20091^2 + 16016^2 .

It is a cyclic number.

It is not a de Polignac number, because 660160537 - 2⁷ = 660160409 is a prime.

It is a super-2 number, since 2×660160537² = 871623869224256738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (660160547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330080268 + 330080269.

It is an arithmetic number, because the mean of its divisors is an integer number (330080269).

Almost surely, 2^660160537 is an apocalyptic number.

It is an amenable number.

660160537 is a deficient number, since it is larger than the sum of its proper divisors (1).

660160537 is an equidigital number, since it uses as much as digits as its factorization.

660160537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 660160537 is about 25693.5894144824. The cubic root of 660160537 is about 870.7293557919.

The spelling of 660160537 in words is "six hundred sixty million, one hundred sixty thousand, five hundred thirty-seven".