155064636 has 18 divisors (see below), whose sum is σ = 391969032. Its totient is φ = 51688200.

The previous prime is 155064631. The next prime is 155064641. The reversal of 155064636 is 636460551.

155064636 is a `hidden beast` number, since 1 + 5 + 5 + 0 + 646 + 3 + 6 = 666.

155064636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155064631) and next prime (155064641).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4307351 = 155064636 / (1 + 5 + 5 + 0 + 6 + 4 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 155064636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155064631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2153640 + ... + 2153711.

Almost surely, 2^155064636 is an apocalyptic number.

It is an amenable number.

155064636 is an abundant number, since it is smaller than the sum of its proper divisors (236904396).

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

155064636 is a wasteful number, since it uses less digits than its factorization.

155064636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307361 (or 4307356 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 155064636 is about 12452.4951716513. The cubic root of 155064636 is about 537.2431926996.

The spelling of 155064636 in words is "one hundred fifty-five million, sixty-four thousand, six hundred thirty-six".