87747113 has 2 divisors, whose sum is σ = 87747114. Its totient is φ = 87747112.

The previous prime is 87747067. The next prime is 87747137. The reversal of 87747113 is 31174778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83759104 + 3988009 = 9152^2 + 1997^2 .

It is a cyclic number.

It is not a de Polignac number, because 87747113 - 2¹² = 87743017 is a prime.

It is not a weakly prime, because it can be changed into another prime (87747613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43873556 + 43873557.

It is an arithmetic number, because the mean of its divisors is an integer number (43873557).

Almost surely, 2^87747113 is an apocalyptic number.

It is an amenable number.

87747113 is a deficient number, since it is larger than the sum of its proper divisors (1).

87747113 is an equidigital number, since it uses as much as digits as its factorization.

87747113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 38.

The square root of 87747113 is about 9367.3428996701. The cubic root of 87747113 is about 444.3695368594.

The spelling of 87747113 in words is "eighty-seven million, seven hundred forty-seven thousand, one hundred thirteen".