65113720 has 32 divisors (see below), whose sum is σ = 167436000. Its totient is φ = 22324608.

The previous prime is 65113693. The next prime is 65113721. The reversal of 65113720 is 2731156.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65113721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115995 + ... + 116554.

It is an arithmetic number, because the mean of its divisors is an integer number (5232375).

Almost surely, 2^65113720 is an apocalyptic number.

It is an amenable number.

65113720 is an abundant number, since it is smaller than the sum of its proper divisors (102322280).

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

65113720 is a wasteful number, since it uses less digits than its factorization.

65113720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232567 (or 232563 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 65113720 is about 8069.3072812974. The cubic root of 65113720 is about 402.3069197261.

Adding to 65113720 its reverse (2731156), we get a palindrome (67844876).

The spelling of 65113720 in words is "sixty-five million, one hundred thirteen thousand, seven hundred twenty".