65371979 has 4 divisors (see below), whose sum is σ = 65468376. Its totient is φ = 65275584.

The previous prime is 65371939. The next prime is 65371981. The reversal of 65371979 is 97917356.

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 65371979 - 2²⁰ = 64323403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65371909) 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, 47174 + ... + 48539.

It is an arithmetic number, because the mean of its divisors is an integer number (16367094).

Almost surely, 2^65371979 is an apocalyptic number.

65371979 is a deficient number, since it is larger than the sum of its proper divisors (96397).

65371979 is an equidigital number, since it uses as much as digits as its factorization.

65371979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96396.

The product of its digits is 357210, while the sum is 47.

The square root of 65371979 is about 8085.2939958916. The cubic root of 65371979 is about 402.8381048594.

The spelling of 65371979 in words is "sixty-five million, three hundred seventy-one thousand, nine hundred seventy-nine".