87526969 has 2 divisors, whose sum is σ = 87526970. Its totient is φ = 87526968.

The previous prime is 87526853. The next prime is 87526979. The reversal of 87526969 is 96962578.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 2518569 = 9220^2 + 1587^2 .

It is a cyclic number.

It is not a de Polignac number, because 87526969 - 2¹³ = 87518777 is a prime.

It is a super-2 number, since 2×87526969² = 15321940604653922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87526979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43763484 + 43763485.

It is an arithmetic number, because the mean of its divisors is an integer number (43763485).

Almost surely, 2^87526969 is an apocalyptic number.

It is an amenable number.

87526969 is a deficient number, since it is larger than the sum of its proper divisors (1).

87526969 is an equidigital number, since it uses as much as digits as its factorization.

87526969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 87526969 is about 9355.5849095607. The cubic root of 87526969 is about 443.9976073918.

The spelling of 87526969 in words is "eighty-seven million, five hundred twenty-six thousand, nine hundred sixty-nine".