65726730 has 24 divisors (see below), whose sum is σ = 170889732. Its totient is φ = 17527104.

The previous prime is 65726701. The next prime is 65726741. The reversal of 65726730 is 3762756.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65658609 + 68121 = 8103^2 + 261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365059 + ... + 365238.

Almost surely, 2^65726730 is an apocalyptic number.

65726730 is an abundant number, since it is smaller than the sum of its proper divisors (105163002).

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

65726730 is a wasteful number, since it uses less digits than its factorization.

65726730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730310 (or 730307 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 65726730 is about 8107.2023534632. The cubic root of 65726730 is about 403.5654781501.

The spelling of 65726730 in words is "sixty-five million, seven hundred twenty-six thousand, seven hundred thirty".