65380824 has 128 divisors (see below), whose sum is σ = 194400000. Its totient is φ = 20300544.

The previous prime is 65380817. The next prime is 65380831. The reversal of 65380824 is 42808356.

It is an interprime number because it is at equal distance from previous prime (65380817) and next prime (65380831).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 365167 + ... + 365345.

It is an arithmetic number, because the mean of its divisors is an integer number (1518750).

Almost surely, 2^65380824 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 65380824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97200000).

65380824 is an abundant number, since it is smaller than the sum of its proper divisors (129019176).

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

65380824 is a wasteful number, since it uses less digits than its factorization.

65380824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 65380824 is about 8085.8409581193. The cubic root of 65380824 is about 402.8562723903.

The spelling of 65380824 in words is "sixty-five million, three hundred eighty thousand, eight hundred twenty-four".