27623997 has 32 divisors (see below), whose sum is σ = 43925760. Its totient is φ = 17309376.

The previous prime is 27623987. The next prime is 27624011. The reversal of 27623997 is 79932672.

It is a happy number.

It is not a de Polignac number, because 27623997 - 2⁶ = 27623933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27623917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36808 + ... + 37550.

It is an arithmetic number, because the mean of its divisors is an integer number (1372680).

Almost surely, 2^27623997 is an apocalyptic number.

27623997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

27623997 is a deficient number, since it is larger than the sum of its proper divisors (16301763).

27623997 is an frugal number, since it uses more digits than its factorization.

27623997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 763 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 27623997 is about 5255.8535938513. The cubic root of 27623997 is about 302.2935211854.

The spelling of 27623997 in words is "twenty-seven million, six hundred twenty-three thousand, nine hundred ninety-seven".