65244636 has 48 divisors (see below), whose sum is σ = 169696800. Its totient is φ = 21678336.

The previous prime is 65244617. The next prime is 65244649. The reversal of 65244636 is 63644256.

65244636 is digitally balanced in base 9, 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).

65244636 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 65244636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41236 + ... + 42788.

It is an arithmetic number, because the mean of its divisors is an integer number (3535350).

Almost surely, 2^65244636 is an apocalyptic number.

It is an amenable number.

65244636 is an abundant number, since it is smaller than the sum of its proper divisors (104452164).

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

65244636 is a wasteful number, since it uses less digits than its factorization.

65244636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1947 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 65244636 is about 8077.4151806132. The cubic root of 65244636 is about 402.5763619376.

The spelling of 65244636 in words is "sixty-five million, two hundred forty-four thousand, six hundred thirty-six".