160661515 has 16 divisors (see below), whose sum is σ = 221663232. Its totient is φ = 109504224.

The previous prime is 160661513. The next prime is 160661521. The reversal of 160661515 is 515166061.

It is a cyclic number.

It is not a de Polignac number, because 160661515 - 2¹ = 160661513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160661513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7899 + ... + 19588.

It is an arithmetic number, because the mean of its divisors is an integer number (13853952).

Almost surely, 2^160661515 is an apocalyptic number.

160661515 is a deficient number, since it is larger than the sum of its proper divisors (61001717).

160661515 is a wasteful number, since it uses less digits than its factorization.

160661515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27666.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 160661515 is about 12675.2323450105. The cubic root of 160661515 is about 543.6306728949.

The spelling of 160661515 in words is "one hundred sixty million, six hundred sixty-one thousand, five hundred fifteen".