64236276 has 72 divisors (see below), whose sum is σ = 180933480. Its totient is φ = 19079424.

The previous prime is 64236253. The next prime is 64236301. The reversal of 64236276 is 67263246.

It is a happy number.

64236276 is a `hidden beast` number, since 6 + 4 + 23 + 627 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 76176 + 64160100 = 276^2 + 8010^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64236276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11206 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (2512965).

Almost surely, 2^64236276 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 64236276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90466740).

64236276 is an abundant number, since it is smaller than the sum of its proper divisors (116697204).

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

64236276 is a wasteful number, since it uses less digits than its factorization.

64236276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4780 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 64236276 is about 8014.7536456213. The cubic root of 64236276 is about 400.4916371514.

The spelling of 64236276 in words is "sixty-four million, two hundred thirty-six thousand, two hundred seventy-six".