23687397 has 16 divisors (see below), whose sum is σ = 35528960. Its totient is φ = 15790140.

The previous prime is 23687371. The next prime is 23687413. The reversal of 23687397 is 79378632.

It is a happy number.

It is not a de Polignac number, because 23687397 - 2⁷ = 23687269 is a prime.

It is a super-2 number, since 2×23687397² = 1122185553271218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23687347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3229 + ... + 7602.

It is an arithmetic number, because the mean of its divisors is an integer number (2220560).

Almost surely, 2^23687397 is an apocalyptic number.

23687397 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

23687397 is a deficient number, since it is larger than the sum of its proper divisors (11841563).

23687397 is an frugal number, since it uses more digits than its factorization.

23687397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10852 (or 10834 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 23687397 is about 4866.9700019622. The cubic root of 23687397 is about 287.1920715696.

The spelling of 23687397 in words is "twenty-three million, six hundred eighty-seven thousand, three hundred ninety-seven".