65113620 has 96 divisors (see below), whose sum is σ = 214220160. Its totient is φ = 14568960.

The previous prime is 65113561. The next prime is 65113637. The reversal of 65113620 is 2631156.

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, 4786 + ... + 12374.

It is an arithmetic number, because the mean of its divisors is an integer number (2231460).

Almost surely, 2^65113620 is an apocalyptic number.

65113620 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 65113620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107110080).

65113620 is an abundant number, since it is smaller than the sum of its proper divisors (149106540).

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

65113620 is a wasteful number, since it uses less digits than its factorization.

65113620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625 (or 7623 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 65113620 is about 8069.3010849763. The cubic root of 65113620 is about 402.3067137750.

Adding to 65113620 its reverse (2631156), we get a palindrome (67744776).

It can be divided in two parts, 651136 and 20, that added together give a palindrome (651156).

The spelling of 65113620 in words is "sixty-five million, one hundred thirteen thousand, six hundred twenty".