19623097 has 6 divisors (see below), whose sum is σ = 21248862. Its totient is φ = 18113472.

The previous prime is 19623041. The next prime is 19623113. The reversal of 19623097 is 79032691.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 19616041 = 84^2 + 4429^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19623097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19623397) 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, 57888 + ... + 58225.

It is an arithmetic number, because the mean of its divisors is an integer number (3541477).

Almost surely, 2^19623097 is an apocalyptic number.

It is an amenable number.

19623097 is a deficient number, since it is larger than the sum of its proper divisors (1625765).

19623097 is a wasteful number, since it uses less digits than its factorization.

19623097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116139 (or 116126 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 19623097 is about 4429.7964964544. The cubic root of 19623097 is about 269.7258167704.

The spelling of 19623097 in words is "nineteen million, six hundred twenty-three thousand, ninety-seven".