23198737 has 2 divisors, whose sum is σ = 23198738. Its totient is φ = 23198736.

The previous prime is 23198731. The next prime is 23198767. The reversal of 23198737 is 73789132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 7230721 = 3996^2 + 2689^2 .

It is a cyclic number.

It is not a de Polignac number, because 23198737 - 2³ = 23198729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23198737.

It is not a weakly prime, because it can be changed into another prime (23198731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11599368 + 11599369.

It is an arithmetic number, because the mean of its divisors is an integer number (11599369).

Almost surely, 2^23198737 is an apocalyptic number.

It is an amenable number.

23198737 is a deficient number, since it is larger than the sum of its proper divisors (1).

23198737 is an equidigital number, since it uses as much as digits as its factorization.

23198737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 40.

The square root of 23198737 is about 4816.5067216812. The cubic root of 23198737 is about 285.2034537814.

The spelling of 23198737 in words is "twenty-three million, one hundred ninety-eight thousand, seven hundred thirty-seven".