155065968 has 80 divisors (see below), whose sum is σ = 459494400. Its totient is φ = 50016960.

The previous prime is 155065921. The next prime is 155065979. The reversal of 155065968 is 869560551.

It is a happy number.

155065968 is a `hidden beast` number, since 1 + 5 + 50 + 6 + 596 + 8 = 666.

155065968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7603 + ... + 19181.

It is an arithmetic number, because the mean of its divisors is an integer number (5743680).

Almost surely, 2^155065968 is an apocalyptic number.

155065968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155065968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229747200).

155065968 is an abundant number, since it is smaller than the sum of its proper divisors (304428432).

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

155065968 is a wasteful number, since it uses less digits than its factorization.

155065968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627 (or 11615 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The square root of 155065968 is about 12452.5486547935. The cubic root of 155065968 is about 537.2447309955.

The spelling of 155065968 in words is "one hundred fifty-five million, sixty-five thousand, nine hundred sixty-eight".