155768 has 8 divisors (see below), whose sum is σ = 292080. Its totient is φ = 77880.

The previous prime is 155747. The next prime is 155773. The reversal of 155768 is 867551.

It is a tau number, because it is divible by the number of its divisors (8).

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, 9728 + ... + 9743.

It is an arithmetic number, because the mean of its divisors is an integer number (36510).

2¹⁵⁵⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

155768 is a deficient number, since it is larger than the sum of its proper divisors (136312).

155768 is a wasteful number, since it uses less digits than its factorization.

155768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19477 (or 19473 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 155768 is about 394.6745494708. The cubic root of 155768 is about 53.8054268697.

The spelling of 155768 in words is "one hundred fifty-five thousand, seven hundred sixty-eight".