65196719 has 4 divisors (see below), whose sum is σ = 74510544. Its totient is φ = 55882896.

The previous prime is 65196713. The next prime is 65196721. The reversal of 65196719 is 91769156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65196719 - 2¹² = 65192623 is a prime.

It is a super-2 number, since 2×65196719² = 8501224336729922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65196719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65196713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4656902 + ... + 4656915.

It is an arithmetic number, because the mean of its divisors is an integer number (18627636).

Almost surely, 2^65196719 is an apocalyptic number.

65196719 is a deficient number, since it is larger than the sum of its proper divisors (9313825).

65196719 is an equidigital number, since it uses as much as digits as its factorization.

65196719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9313824.

The product of its digits is 102060, while the sum is 44.

The square root of 65196719 is about 8074.4485260605. The cubic root of 65196719 is about 402.4777843531.

The spelling of 65196719 in words is "sixty-five million, one hundred ninety-six thousand, seven hundred nineteen".