87427069 has 2 divisors, whose sum is σ = 87427070. Its totient is φ = 87427068.

The previous prime is 87427061. The next prime is 87427079. The reversal of 87427069 is 96072478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62805625 + 24621444 = 7925^2 + 4962^2 .

It is a cyclic number.

It is not a de Polignac number, because 87427069 - 2³ = 87427061 is a prime.

It is a super-2 number, since 2×87427069² = 15286984787861522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87427061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43713534 + 43713535.

It is an arithmetic number, because the mean of its divisors is an integer number (43713535).

Almost surely, 2^87427069 is an apocalyptic number.

It is an amenable number.

87427069 is a deficient number, since it is larger than the sum of its proper divisors (1).

87427069 is an equidigital number, since it uses as much as digits as its factorization.

87427069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 87427069 is about 9350.2443283585. The cubic root of 87427069 is about 443.8286223450.

The spelling of 87427069 in words is "eighty-seven million, four hundred twenty-seven thousand, sixty-nine".