87679147 has 2 divisors, whose sum is σ = 87679148. Its totient is φ = 87679146.

The previous prime is 87679139. The next prime is 87679157. The reversal of 87679147 is 74197678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87679147 - 2³ = 87679139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87679147.

It is not a weakly prime, because it can be changed into another prime (87679127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43839573 + 43839574.

It is an arithmetic number, because the mean of its divisors is an integer number (43839574).

Almost surely, 2^87679147 is an apocalyptic number.

87679147 is a deficient number, since it is larger than the sum of its proper divisors (1).

87679147 is an equidigital number, since it uses as much as digits as its factorization.

87679147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 49.

The square root of 87679147 is about 9363.7143805223. The cubic root of 87679147 is about 444.2547759285.

The spelling of 87679147 in words is "eighty-seven million, six hundred seventy-nine thousand, one hundred forty-seven".