163456660 has 12 divisors (see below), whose sum is σ = 343259028. Its totient is φ = 65382656.

The previous prime is 163456603. The next prime is 163456661. The reversal of 163456660 is 66654361.

163456660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 34316164 + 129140496 = 5858^2 + 11364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163456661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4086397 + ... + 4086436.

It is an arithmetic number, because the mean of its divisors is an integer number (28604919).

Almost surely, 2^163456660 is an apocalyptic number.

163456660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163456660 is an abundant number, since it is smaller than the sum of its proper divisors (179802368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163456660 is a wasteful number, since it uses less digits than its factorization.

163456660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172842 (or 8172840 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 163456660 is about 12785.0170121123. The cubic root of 163456660 is about 546.7652104392.

It can be divided in two parts, 16345 and 6660, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 163456660 in words is "one hundred sixty-three million, four hundred fifty-six thousand, six hundred sixty".