87436693 has 2 divisors, whose sum is σ = 87436694. Its totient is φ = 87436692.

The previous prime is 87436681. The next prime is 87436703. The reversal of 87436693 is 39663478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76160529 + 11276164 = 8727^2 + 3358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87436693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87436633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43718346 + 43718347.

It is an arithmetic number, because the mean of its divisors is an integer number (43718347).

Almost surely, 2^87436693 is an apocalyptic number.

It is an amenable number.

87436693 is a deficient number, since it is larger than the sum of its proper divisors (1).

87436693 is an equidigital number, since it uses as much as digits as its factorization.

87436693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 87436693 is about 9350.7589531546. The cubic root of 87436693 is about 443.8449073468.

The spelling of 87436693 in words is "eighty-seven million, four hundred thirty-six thousand, six hundred ninety-three".