166356648 has 24 divisors (see below), whose sum is σ = 450549450. Its totient is φ = 55452192.

The previous prime is 166356629. The next prime is 166356653. The reversal of 166356648 is 846653661.

166356648 is a `hidden beast` number, since 1 + 6 + 635 + 6 + 6 + 4 + 8 = 666.

166356648 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 only one way, i.e., 120956004 + 45400644 = 10998^2 + 6738^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155183 + ... + 1155326.

Almost surely, 2^166356648 is an apocalyptic number.

166356648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166356648 is an abundant number, since it is smaller than the sum of its proper divisors (284192802).

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

166356648 is a wasteful number, since it uses less digits than its factorization.

166356648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310521 (or 2310514 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 166356648 is about 12897.9319272510. The cubic root of 166356648 is about 549.9797766669.

It can be divided in two parts, 1663 and 56648, that added together give a triangular number (58311 = T₃₄₁).

The spelling of 166356648 in words is "one hundred sixty-six million, three hundred fifty-six thousand, six hundred forty-eight".