87679247 has 2 divisors, whose sum is σ = 87679248. Its totient is φ = 87679246.

The previous prime is 87679231. The next prime is 87679259. The reversal of 87679247 is 74297678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87679247 - 2⁴ = 87679231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87679195 and 87679204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87679147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43839623 + 43839624.

It is an arithmetic number, because the mean of its divisors is an integer number (43839624).

Almost surely, 2^87679247 is an apocalyptic number.

87679247 is a deficient number, since it is larger than the sum of its proper divisors (1).

87679247 is an equidigital number, since it uses as much as digits as its factorization.

87679247 is an evil number, because the sum of its binary digits is even.

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

The square root of 87679247 is about 9363.7197202821. The cubic root of 87679247 is about 444.2549448225.

The spelling of 87679247 in words is "eighty-seven million, six hundred seventy-nine thousand, two hundred forty-seven".