619881663 has 16 divisors (see below), whose sum is σ = 833554656. Its totient is φ = 409745280.

The previous prime is 619881653. The next prime is 619881667. The reversal of 619881663 is 366188916.

It is not a de Polignac number, because 619881663 - 2⁹ = 619881151 is a prime.

It is a super-2 number, since 2×619881663² = 768506552247291138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619881667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217081 + ... + 219917.

It is an arithmetic number, because the mean of its divisors is an integer number (52097166).

Almost surely, 2^619881663 is an apocalyptic number.

619881663 is a deficient number, since it is larger than the sum of its proper divisors (213672993).

619881663 is a wasteful number, since it uses less digits than its factorization.

619881663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434.

The product of its digits is 373248, while the sum is 48.

The square root of 619881663 is about 24897.4228184364. The cubic root of 619881663 is about 852.6476442394.

The spelling of 619881663 in words is "six hundred nineteen million, eight hundred eighty-one thousand, six hundred sixty-three".