65681364 has 72 divisors (see below), whose sum is σ = 183156960. Its totient is φ = 18252864.

The previous prime is 65681359. The next prime is 65681381. The reversal of 65681364 is 46318656.

65681364 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

65681364 is strictly pandigital in base 9.

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, 20247 + ... + 23265.

Almost surely, 2^65681364 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 65681364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91578480).

65681364 is an abundant number, since it is smaller than the sum of its proper divisors (117475596).

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

65681364 is a wasteful number, since it uses less digits than its factorization.

65681364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077 (or 3068 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 65681364 is about 8104.4039879562. The cubic root of 65681364 is about 403.4726069275.

The spelling of 65681364 in words is "sixty-five million, six hundred eighty-one thousand, three hundred sixty-four".