65720703 has 8 divisors (see below), whose sum is σ = 87797248. Its totient is φ = 43728984.

The previous prime is 65720693. The next prime is 65720719. The reversal of 65720703 is 30702756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65720703 - 2⁹ = 65720191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65720773) 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, 19375 + ... + 22512.

It is an arithmetic number, because the mean of its divisors is an integer number (10974656).

Almost surely, 2^65720703 is an apocalyptic number.

65720703 is a deficient number, since it is larger than the sum of its proper divisors (22076545).

65720703 is a wasteful number, since it uses less digits than its factorization.

65720703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42413.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 65720703 is about 8106.8306384184. The cubic root of 65720703 is about 403.5531424105.

The spelling of 65720703 in words is "sixty-five million, seven hundred twenty thousand, seven hundred three".