64247436 has 72 divisors (see below), whose sum is σ = 186513600. Its totient is φ = 18442080.

The previous prime is 64247423. The next prime is 64247473. The reversal of 64247436 is 63474246.

64247436 is a `hidden beast` number, since 642 + 4 + 7 + 4 + 3 + 6 = 666.

64247436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64247436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3255 + ... + 11793.

Almost surely, 2^64247436 is an apocalyptic number.

64247436 is a gapful number since it is divisible by the number (66) 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 64247436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93256800).

64247436 is an abundant number, since it is smaller than the sum of its proper divisors (122266164).

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

64247436 is a wasteful number, since it uses less digits than its factorization.

64247436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8579 (or 8574 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 64247436 is about 8015.4498314193. The cubic root of 64247436 is about 400.5148287608.

The spelling of 64247436 in words is "sixty-four million, two hundred forty-seven thousand, four hundred thirty-six".