19696401 has 6 divisors (see below), whose sum is σ = 28450370. Its totient is φ = 13130928.

The previous prime is 19696399. The next prime is 19696403. The reversal of 19696401 is 10469691.

19696401 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 640 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (19696399) and next prime (19696403).

It can be written as a sum of positive squares in only one way, i.e., 17139600 + 2556801 = 4140^2 + 1599^2 .

It is not a de Polignac number, because 19696401 - 2¹ = 19696399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19696403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1094236 + ... + 1094253.

Almost surely, 2^19696401 is an apocalyptic number.

It is an amenable number.

19696401 is a deficient number, since it is larger than the sum of its proper divisors (8753969).

19696401 is a wasteful number, since it uses less digits than its factorization.

19696401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188495 (or 2188492 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 19696401 is about 4438.0627530489. The cubic root of 19696401 is about 270.0612618191.

The spelling of 19696401 in words is "nineteen million, six hundred ninety-six thousand, four hundred one".