87247967 has 2 divisors, whose sum is σ = 87247968. Its totient is φ = 87247966.

The previous prime is 87247957. The next prime is 87247969. The reversal of 87247967 is 76974278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87247967 - 2¹⁸ = 86985823 is a prime.

It is a super-2 number, since 2×87247967² = 15224415491266178, which contains 22 as substring.

Together with 87247969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87247969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43623983 + 43623984.

It is an arithmetic number, because the mean of its divisors is an integer number (43623984).

Almost surely, 2^87247967 is an apocalyptic number.

87247967 is a deficient number, since it is larger than the sum of its proper divisors (1).

87247967 is an equidigital number, since it uses as much as digits as its factorization.

87247967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The square root of 87247967 is about 9340.6620215058. The cubic root of 87247967 is about 443.5253412299.

The spelling of 87247967 in words is "eighty-seven million, two hundred forty-seven thousand, nine hundred sixty-seven".