166697952 has 24 divisors (see below), whose sum is σ = 437582376. Its totient is φ = 55565952.

The previous prime is 166697941. The next prime is 166697957. The reversal of 166697952 is 259796661.

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

It is a junction number, because it is equal to n+sod(n) for n = 166697895 and 166697904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166697957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868123 + ... + 868314.

It is an arithmetic number, because the mean of its divisors is an integer number (18232599).

Almost surely, 2^166697952 is an apocalyptic number.

166697952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166697952 is an abundant number, since it is smaller than the sum of its proper divisors (270884424).

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

166697952 is a wasteful number, since it uses less digits than its factorization.

166697952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736450 (or 1736442 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The square root of 166697952 is about 12911.1561062517. The cubic root of 166697952 is about 550.3556399596.

The spelling of 166697952 in words is "one hundred sixty-six million, six hundred ninety-seven thousand, nine hundred fifty-two".