87805073 has 2 divisors, whose sum is σ = 87805074. Its totient is φ = 87805072.

The previous prime is 87805063. The next prime is 87805087. The reversal of 87805073 is 37050878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75916369 + 11888704 = 8713^2 + 3448^2 .

It is a cyclic number.

It is not a de Polignac number, because 87805073 - 2⁶ = 87805009 is a prime.

It is not a weakly prime, because it can be changed into another prime (87805043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43902536 + 43902537.

It is an arithmetic number, because the mean of its divisors is an integer number (43902537).

Almost surely, 2^87805073 is an apocalyptic number.

It is an amenable number.

87805073 is a deficient number, since it is larger than the sum of its proper divisors (1).

87805073 is an equidigital number, since it uses as much as digits as its factorization.

87805073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 87805073 is about 9370.4361157846. The cubic root of 87805073 is about 444.4673558027.

The spelling of 87805073 in words is "eighty-seven million, eight hundred five thousand, seventy-three".