87956069 has 2 divisors, whose sum is σ = 87956070. Its totient is φ = 87956068.

The previous prime is 87956053. The next prime is 87956081. The reversal of 87956069 is 96065978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65011969 + 22944100 = 8063^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 87956069 - 2⁴ = 87956053 is a prime.

It is a super-2 number, since 2×87956069² = 15472540147865522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87956039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43978034 + 43978035.

It is an arithmetic number, because the mean of its divisors is an integer number (43978035).

Almost surely, 2^87956069 is an apocalyptic number.

It is an amenable number.

87956069 is a deficient number, since it is larger than the sum of its proper divisors (1).

87956069 is an equidigital number, since it uses as much as digits as its factorization.

87956069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 87956069 is about 9378.4896971741. The cubic root of 87956069 is about 444.7219893775.

The spelling of 87956069 in words is "eighty-seven million, nine hundred fifty-six thousand, sixty-nine".