623135136 has 192 divisors, whose sum is σ = 1947794688. Its totient is φ = 172474368.

The previous prime is 623135131. The next prime is 623135171. The reversal of 623135136 is 631531326.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (623135131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487330 + ... + 488606.

It is an arithmetic number, because the mean of its divisors is an integer number (10144764).

Almost surely, 2^623135136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623135136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973897344).

623135136 is an abundant number, since it is smaller than the sum of its proper divisors (1324659552).

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

623135136 is a wasteful number, since it uses less digits than its factorization.

623135136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1335 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 623135136 is about 24962.6748566735. The cubic root of 623135136 is about 854.1367601421.

The spelling of 623135136 in words is "six hundred twenty-three million, one hundred thirty-five thousand, one hundred thirty-six".