619969623 has 32 divisors (see below), whose sum is σ = 1061630976. Its totient is φ = 312795648.

The previous prime is 619969591. The next prime is 619969661. The reversal of 619969623 is 326969916.

It is a happy number.

It is not a de Polignac number, because 619969623 - 2⁵ = 619969591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619969123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43090 + ... + 55647.

It is an arithmetic number, because the mean of its divisors is an integer number (33175968).

Almost surely, 2^619969623 is an apocalyptic number.

619969623 is a deficient number, since it is larger than the sum of its proper divisors (441661353).

619969623 is a wasteful number, since it uses less digits than its factorization.

619969623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98783.

The product of its digits is 944784, while the sum is 51.

The square root of 619969623 is about 24899.1892036669. The cubic root of 619969623 is about 852.6879720117.

The spelling of 619969623 in words is "six hundred nineteen million, nine hundred sixty-nine thousand, six hundred twenty-three".