97823087 has 2 divisors, whose sum is σ = 97823088. Its totient is φ = 97823086.

The previous prime is 97823081. The next prime is 97823111. The reversal of 97823087 is 78032879.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78032879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97823087 - 2⁸ = 97822831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97823081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48911543 + 48911544.

It is an arithmetic number, because the mean of its divisors is an integer number (48911544).

Almost surely, 2^97823087 is an apocalyptic number.

97823087 is a deficient number, since it is larger than the sum of its proper divisors (1).

97823087 is an equidigital number, since it uses as much as digits as its factorization.

97823087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 97823087 is about 9890.5554444632. Note that the first 3 decimals coincide. The cubic root of 97823087 is about 460.7660314441.

The spelling of 97823087 in words is "ninety-seven million, eight hundred twenty-three thousand, eighty-seven".