87397001 has 2 divisors, whose sum is σ = 87397002. Its totient is φ = 87397000.

The previous prime is 87396971. The next prime is 87397003. The reversal of 87397001 is 10079378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66015625 + 21381376 = 8125^2 + 4624^2 .

It is a cyclic number.

It is not a de Polignac number, because 87397001 - 2⁶ = 87396937 is a prime.

It is a Sophie Germain prime.

Together with 87397003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87397003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43698500 + 43698501.

It is an arithmetic number, because the mean of its divisors is an integer number (43698501).

Almost surely, 2^87397001 is an apocalyptic number.

It is an amenable number.

87397001 is a deficient number, since it is larger than the sum of its proper divisors (1).

87397001 is an equidigital number, since it uses as much as digits as its factorization.

87397001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 87397001 is about 9348.6363176669. The cubic root of 87397001 is about 443.7777358581. Note that the first 4 decimals are identical.

The spelling of 87397001 in words is "eighty-seven million, three hundred ninety-seven thousand, one".