636273960 has 192 divisors, whose sum is σ = 2318267520. Its totient is φ = 136826880.

The previous prime is 636273931. The next prime is 636273961. The reversal of 636273960 is 69372636.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (636273961) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241450 + ... + 244070.

It is an arithmetic number, because the mean of its divisors is an integer number (12074310).

Almost surely, 2^636273960 is an apocalyptic number.

636273960 is a gapful number since it is divisible by the number (60) 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 636273960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159133760).

636273960 is an abundant number, since it is smaller than the sum of its proper divisors (1681993560).

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

636273960 is a wasteful number, since it uses less digits than its factorization.

636273960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2655 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 42.

The square root of 636273960 is about 25224.4714513506. The cubic root of 636273960 is about 860.0982220607.

The spelling of 636273960 in words is "six hundred thirty-six million, two hundred seventy-three thousand, nine hundred sixty".