19997614 has 32 divisors (see below), whose sum is σ = 38868480. Its totient is φ = 7493472.

The previous prime is 19997609. The next prime is 19997641. The reversal of 19997614 is 41679991.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (1214640).

Almost surely, 2^19997614 is an apocalyptic number.

19997614 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19997614 is a deficient number, since it is larger than the sum of its proper divisors (18870866).

19997614 is a wasteful number, since it uses less digits than its factorization.

19997614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824.

The product of its digits is 122472, while the sum is 46.

The square root of 19997614 is about 4471.8691841332. The cubic root of 19997614 is about 271.4309668962.

The spelling of 19997614 in words is "nineteen million, nine hundred ninety-seven thousand, six hundred fourteen".