619565423 has 4 divisors (see below), whose sum is σ = 620304720. Its totient is φ = 618826128.

The previous prime is 619565347. The next prime is 619565447. The reversal of 619565423 is 324565916.

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 619565423 - 2¹⁰ = 619564399 is a prime.

It is a super-2 number, since 2×619565423² = 767722626754337858, 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 (619565123) 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, 368390 + ... + 370067.

It is an arithmetic number, because the mean of its divisors is an integer number (155076180).

Almost surely, 2^619565423 is an apocalyptic number.

619565423 is a deficient number, since it is larger than the sum of its proper divisors (739297).

619565423 is an equidigital number, since it uses as much as digits as its factorization.

619565423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739296.

The product of its digits is 194400, while the sum is 41.

The square root of 619565423 is about 24891.0711501132. The cubic root of 619565423 is about 852.5026234644.

The spelling of 619565423 in words is "six hundred nineteen million, five hundred sixty-five thousand, four hundred twenty-three".