86730869 has 2 divisors, whose sum is σ = 86730870. Its totient is φ = 86730868.

The previous prime is 86730863. The next prime is 86730881. The reversal of 86730869 is 96803768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 36844900 = 7063^2 + 6070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86730869 is a prime.

It is a super-2 number, since 2×86730869² = 15044487274990322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86730863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365434 + 43365435.

It is an arithmetic number, because the mean of its divisors is an integer number (43365435).

Almost surely, 2^86730869 is an apocalyptic number.

It is an amenable number.

86730869 is a deficient number, since it is larger than the sum of its proper divisors (1).

86730869 is an equidigital number, since it uses as much as digits as its factorization.

86730869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 86730869 is about 9312.9409425809. The cubic root of 86730869 is about 442.6473812963.

The spelling of 86730869 in words is "eighty-six million, seven hundred thirty thousand, eight hundred sixty-nine".