65015740 has 24 divisors (see below), whose sum is σ = 136845072. Its totient is φ = 25946880.

The previous prime is 65015737. The next prime is 65015759. The reversal of 65015740 is 4751056.

It is a junction number, because it is equal to n+sod(n) for n = 65015699 and 65015708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5860 + ... + 12820.

It is an arithmetic number, because the mean of its divisors is an integer number (5701878).

Almost surely, 2^65015740 is an apocalyptic number.

It is an amenable number.

65015740 is an abundant number, since it is smaller than the sum of its proper divisors (71829332).

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

65015740 is a wasteful number, since it uses less digits than its factorization.

65015740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7437 (or 7435 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 65015740 is about 8063.2338425721. The cubic root of 65015740 is about 402.1050277132.

Adding to 65015740 its reverse (4751056), we get a palindrome (69766796).

The spelling of 65015740 in words is "sixty-five million, fifteen thousand, seven hundred forty".