168772 has 6 divisors (see below), whose sum is σ = 295358. Its totient is φ = 84384.

The previous prime is 168769. The next prime is 168781. The reversal of 168772 is 277861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 21316 = 384^2 + 146^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21093 + ... + 21100.

2¹⁶⁸⁷⁷² is an apocalyptic number.

It is an amenable number.

168772 is a deficient number, since it is larger than the sum of its proper divisors (126586).

168772 is a wasteful number, since it uses less digits than its factorization.

168772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42197 (or 42195 counting only the distinct ones).

The product of its digits is 4704, while the sum is 31.

The square root of 168772 is about 410.8186948034. The cubic root of 168772 is about 55.2628738180.

The spelling of 168772 in words is "one hundred sixty-eight thousand, seven hundred seventy-two".