65021384 has 32 divisors (see below), whose sum is σ = 126489600. Its totient is φ = 31301760.

The previous prime is 65021381. The next prime is 65021387. The reversal of 65021384 is 48312056.

It is an interprime number because it is at equal distance from previous prime (65021381) and next prime (65021387).

It is not an unprimeable number, because it can be changed into a prime (65021381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58724 + ... + 59820.

It is an arithmetic number, because the mean of its divisors is an integer number (3952800).

Almost surely, 2^65021384 is an apocalyptic number.

It is an amenable number.

65021384 is a deficient number, since it is larger than the sum of its proper divisors (61468216).

65021384 is a wasteful number, since it uses less digits than its factorization.

65021384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 65021384 is about 8063.5838186256. The cubic root of 65021384 is about 402.1166629218.

The spelling of 65021384 in words is "sixty-five million, twenty-one thousand, three hundred eighty-four".