23087797 has 4 divisors (see below), whose sum is σ = 23650956. Its totient is φ = 22524640.

The previous prime is 23087789. The next prime is 23087849. The reversal of 23087797 is 79778032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12680721 + 10407076 = 3561^2 + 3226^2 .

It is a cyclic number.

It is not a de Polignac number, because 23087797 - 2³ = 23087789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23087747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281518 + ... + 281599.

It is an arithmetic number, because the mean of its divisors is an integer number (5912739).

Almost surely, 2^23087797 is an apocalyptic number.

It is an amenable number.

23087797 is a deficient number, since it is larger than the sum of its proper divisors (563159).

23087797 is an equidigital number, since it uses as much as digits as its factorization.

23087797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563158.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 23087797 is about 4804.9762746553. The cubic root of 23087797 is about 284.7480979266.

The spelling of 23087797 in words is "twenty-three million, eighty-seven thousand, seven hundred ninety-seven".