65233920 has 176 divisors, whose sum is σ = 216949248. Its totient is φ = 16711680.

The previous prime is 65233919. The next prime is 65233921. The reversal of 65233920 is 2933256.

It is an interprime number because it is at equal distance from previous prime (65233919) and next prime (65233921).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (65233921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476092 + ... + 476228.

Almost surely, 2^65233920 is an apocalyptic number.

65233920 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 65233920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108474624).

65233920 is an abundant number, since it is smaller than the sum of its proper divisors (151715328).

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

65233920 is a wasteful number, since it uses less digits than its factorization.

65233920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 65233920 is about 8076.7518223603. The cubic root of 65233920 is about 402.5543205624.

The spelling of 65233920 in words is "sixty-five million, two hundred thirty-three thousand, nine hundred twenty".