87567497 has 2 divisors, whose sum is σ = 87567498. Its totient is φ = 87567496.

The previous prime is 87567461. The next prime is 87567499. The reversal of 87567497 is 79476578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87534736 + 32761 = 9356^2 + 181^2 .

It is a cyclic number.

It is not a de Polignac number, because 87567497 - 2⁶ = 87567433 is a prime.

Together with 87567499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87567499) 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 as a sum of consecutive naturals, namely, 43783748 + 43783749.

It is an arithmetic number, because the mean of its divisors is an integer number (43783749).

Almost surely, 2^87567497 is an apocalyptic number.

It is an amenable number.

87567497 is a deficient number, since it is larger than the sum of its proper divisors (1).

87567497 is an equidigital number, since it uses as much as digits as its factorization.

87567497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 53.

The square root of 87567497 is about 9357.7506378403. The cubic root of 87567497 is about 444.0661255435.

The spelling of 87567497 in words is "eighty-seven million, five hundred sixty-seven thousand, four hundred ninety-seven".