87277873 has 2 divisors, whose sum is σ = 87277874. Its totient is φ = 87277872.

The previous prime is 87277843. The next prime is 87277877. The reversal of 87277873 is 37877278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85063729 + 2214144 = 9223^2 + 1488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87277873 is a prime.

It is not a weakly prime, because it can be changed into another prime (87277877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43638936 + 43638937.

It is an arithmetic number, because the mean of its divisors is an integer number (43638937).

Almost surely, 2^87277873 is an apocalyptic number.

It is an amenable number.

87277873 is a deficient number, since it is larger than the sum of its proper divisors (1).

87277873 is an equidigital number, since it uses as much as digits as its factorization.

87277873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921984, while the sum is 49.

The square root of 87277873 is about 9342.2627344771. The cubic root of 87277873 is about 443.5760111923.

The spelling of 87277873 in words is "eighty-seven million, two hundred seventy-seven thousand, eight hundred seventy-three".