65947320 has 96 divisors (see below), whose sum is σ = 220165920. Its totient is φ = 17107200.

The previous prime is 65947319. The next prime is 65947327. The reversal of 65947320 is 2374956.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65947327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10845 + ... + 15795.

It is an arithmetic number, because the mean of its divisors is an integer number (2293395).

Almost surely, 2^65947320 is an apocalyptic number.

65947320 is a gapful number since it is divisible by the number (60) 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 65947320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110082960).

65947320 is an abundant number, since it is smaller than the sum of its proper divisors (154218600).

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

65947320 is a wasteful number, since it uses less digits than its factorization.

65947320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005 (or 4998 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 65947320 is about 8120.7955275330. The cubic root of 65947320 is about 404.0164519654.

The spelling of 65947320 in words is "sixty-five million, nine hundred forty-seven thousand, three hundred twenty".