87672526693 has 2 divisors, whose sum is σ = 87672526694. Its totient is φ = 87672526692.

The previous prime is 87672526691. The next prime is 87672526771. The reversal of 87672526693 is 39662527678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68067766404 + 19604760289 = 260898^2 + 140017^2 .

It is a cyclic number.

It is not a de Polignac number, because 87672526693 - 2¹ = 87672526691 is a prime.

Together with 87672526691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87672526691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43836263346 + 43836263347.

It is an arithmetic number, because the mean of its divisors is an integer number (43836263347).

Almost surely, 2^87672526693 is an apocalyptic number.

It is an amenable number.

87672526693 is a deficient number, since it is larger than the sum of its proper divisors (1).

87672526693 is an equidigital number, since it uses as much as digits as its factorization.

87672526693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 61.

The spelling of 87672526693 in words is "eighty-seven billion, six hundred seventy-two million, five hundred twenty-six thousand, six hundred ninety-three".