65380519 has 4 divisors (see below), whose sum is σ = 67489600. Its totient is φ = 63271440.

The previous prime is 65380507. The next prime is 65380537. The reversal of 65380519 is 91508356.

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 65380519 - 2²⁵ = 31826087 is a prime.

It is a super-2 number, since 2×65380519² = 8549224529418722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65380019) 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, 1054494 + ... + 1054555.

It is an arithmetic number, because the mean of its divisors is an integer number (16872400).

Almost surely, 2^65380519 is an apocalyptic number.

65380519 is a deficient number, since it is larger than the sum of its proper divisors (2109081).

65380519 is a wasteful number, since it uses less digits than its factorization.

65380519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109080.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 65380519 is about 8085.8220979688. The cubic root of 65380519 is about 402.8556459510.

The spelling of 65380519 in words is "sixty-five million, three hundred eighty thousand, five hundred nineteen".