87996977 has 2 divisors, whose sum is σ = 87996978. Its totient is φ = 87996976.

The previous prime is 87996973. The next prime is 87997001. The reversal of 87996977 is 77969978.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87684496 + 312481 = 9364^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 87996977 - 2² = 87996973 is a prime.

It is a super-2 number, since 2×87996977² = 15486935922277058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87996973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43998488 + 43998489.

It is an arithmetic number, because the mean of its divisors is an integer number (43998489).

Almost surely, 2^87996977 is an apocalyptic number.

It is an amenable number.

87996977 is a deficient number, since it is larger than the sum of its proper divisors (1).

87996977 is an equidigital number, since it uses as much as digits as its factorization.

87996977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12002256, while the sum is 62.

The square root of 87996977 is about 9380.6703918217. The cubic root of 87996977 is about 444.7909248042.

The spelling of 87996977 in words is "eighty-seven million, nine hundred ninety-six thousand, nine hundred seventy-seven".