160661767 has 4 divisors (see below), whose sum is σ = 183613456. Its totient is φ = 137710080.

The previous prime is 160661741. The next prime is 160661771. The reversal of 160661767 is 767166061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 767166061 = 1783 ⋅430267.

It is a cyclic number.

It is not a de Polignac number, because 160661767 - 2²⁷ = 26444039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160661167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11475834 + ... + 11475847.

It is an arithmetic number, because the mean of its divisors is an integer number (45903364).

Almost surely, 2^160661767 is an apocalyptic number.

160661767 is a deficient number, since it is larger than the sum of its proper divisors (22951689).

160661767 is an equidigital number, since it uses as much as digits as its factorization.

160661767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22951688.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 160661767 is about 12675.2422856528. The cubic root of 160661767 is about 543.6309571257.

The spelling of 160661767 in words is "one hundred sixty million, six hundred sixty-one thousand, seven hundred sixty-seven".