65163740 has 24 divisors (see below), whose sum is σ = 137039280. Its totient is φ = 26028288.

The previous prime is 65163713. The next prime is 65163743. The reversal of 65163740 is 4736156.

It is a junction number, because it is equal to n+sod(n) for n = 65163697 and 65163706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65163743) 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, 15284 + ... + 19076.

It is an arithmetic number, because the mean of its divisors is an integer number (5709970).

Almost surely, 2^65163740 is an apocalyptic number.

It is an amenable number.

65163740 is an abundant number, since it is smaller than the sum of its proper divisors (71875540).

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

65163740 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 13 representation: 65163740 = (10667435)₁₃.

65163740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661 (or 4659 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 65163740 is about 8072.4060849291. The cubic root of 65163740 is about 402.4099100095.

Adding to 65163740 its reverse (4736156), we get a palindrome (69899896).

The spelling of 65163740 in words is "sixty-five million, one hundred sixty-three thousand, seven hundred forty".