87606769 has 2 divisors, whose sum is σ = 87606770. Its totient is φ = 87606768.

The previous prime is 87606751. The next prime is 87606773. The reversal of 87606769 is 96760678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59907600 + 27699169 = 7740^2 + 5263^2 .

It is a cyclic number.

It is not a de Polignac number, because 87606769 - 2⁵ = 87606737 is a prime.

It is a super-2 number, since 2×87606769² = 15349891949238722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87606719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43803384 + 43803385.

It is an arithmetic number, because the mean of its divisors is an integer number (43803385).

Almost surely, 2^87606769 is an apocalyptic number.

It is an amenable number.

87606769 is a deficient number, since it is larger than the sum of its proper divisors (1).

87606769 is an equidigital number, since it uses as much as digits as its factorization.

87606769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 87606769 is about 9359.8487701458. The cubic root of 87606769 is about 444.1325000891.

The spelling of 87606769 in words is "eighty-seven million, six hundred six thousand, seven hundred sixty-nine".