65875620 has 96 divisors (see below), whose sum is σ = 192761856. Its totient is φ = 16790400.

The previous prime is 65875619. The next prime is 65875631. The reversal of 65875620 is 2657856.

It is a happy 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, 198855 + ... + 199185.

It is an arithmetic number, because the mean of its divisors is an integer number (2007936).

Almost surely, 2^65875620 is an apocalyptic number.

65875620 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 65875620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96380928).

65875620 is an abundant number, since it is smaller than the sum of its proper divisors (126886236).

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

65875620 is a wasteful number, since it uses less digits than its factorization.

65875620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 65875620 is about 8116.3797348325. The cubic root of 65875620 is about 403.8699790723.

The spelling of 65875620 in words is "sixty-five million, eight hundred seventy-five thousand, six hundred twenty".