87977311 has 4 divisors (see below), whose sum is σ = 89419624. Its totient is φ = 86535000.

The previous prime is 87977299. The next prime is 87977321. The reversal of 87977311 is 11377978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11377978 = 2 ⋅5688989.

It is a cyclic number.

It is not a de Polignac number, because 87977311 - 2⁹ = 87976799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87977321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721065 + ... + 721186.

It is an arithmetic number, because the mean of its divisors is an integer number (22354906).

Almost surely, 2^87977311 is an apocalyptic number.

87977311 is a deficient number, since it is larger than the sum of its proper divisors (1442313).

87977311 is a wasteful number, since it uses less digits than its factorization.

87977311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442312.

The product of its digits is 74088, while the sum is 43.

The square root of 87977311 is about 9379.6221139234. The cubic root of 87977311 is about 444.7577876430.

It can be divided in two parts, 87977 and 311, that added together give a palindrome (88288).

The spelling of 87977311 in words is "eighty-seven million, nine hundred seventy-seven thousand, three hundred eleven".