65719697 has 8 divisors (see below), whose sum is σ = 67320000. Its totient is φ = 64137744.

The previous prime is 65719691. The next prime is 65719741. The reversal of 65719697 is 79691756.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65719697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65719691) 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, 2804 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (8415000).

Almost surely, 2^65719697 is an apocalyptic number.

65719697 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

65719697 is a deficient number, since it is larger than the sum of its proper divisors (1600303).

65719697 is a wasteful number, since it uses less digits than its factorization.

65719697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175.

The product of its digits is 714420, while the sum is 50.

The square root of 65719697 is about 8106.7685917386. The cubic root of 65719697 is about 403.5510833103.

The spelling of 65719697 in words is "sixty-five million, seven hundred nineteen thousand, six hundred ninety-seven".