19608623 has 4 divisors (see below), whose sum is σ = 19665480. Its totient is φ = 19551768.

The previous prime is 19608601. The next prime is 19608637. The reversal of 19608623 is 32680691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32680691 = 653 ⋅50047.

It is a cyclic number.

It is not a de Polignac number, because 19608623 - 2⁸ = 19608367 is a prime.

It is a super-2 number, since 2×19608623² = 768996191912258, 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 (19608643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27908 + ... + 28601.

It is an arithmetic number, because the mean of its divisors is an integer number (4916370).

Almost surely, 2^19608623 is an apocalyptic number.

19608623 is a deficient number, since it is larger than the sum of its proper divisors (56857).

19608623 is an equidigital number, since it uses as much as digits as its factorization.

19608623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56856.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 19608623 is about 4428.1624857270. The cubic root of 19608623 is about 269.6594838545.

The spelling of 19608623 in words is "nineteen million, six hundred eight thousand, six hundred twenty-three".