87784563227 has 4 divisors (see below), whose sum is σ = 89272437240. Its totient is φ = 86296689216.

The previous prime is 87784563179. The next prime is 87784563257. The reversal of 87784563227 is 72236548778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72236548778 = 2 ⋅36118274389.

It is a cyclic number.

It is not a de Polignac number, because 87784563227 - 2¹² = 87784559131 is a prime.

It is a super-2 number, since 2×87784563227² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 1487873953 = 87784563227 / (8 + 7 + 7 + 8 + 4 + 5 + 6 + 3 + 2 + 2 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87784563257) 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, 743936918 + ... + 743937035.

It is an arithmetic number, because the mean of its divisors is an integer number (22318109310).

Almost surely, 2^87784563227 is an apocalyptic number.

87784563227 is a deficient number, since it is larger than the sum of its proper divisors (1487874013).

87784563227 is a wasteful number, since it uses less digits than its factorization.

87784563227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487874012.

The product of its digits is 31610880, while the sum is 59.

The spelling of 87784563227 in words is "eighty-seven billion, seven hundred eighty-four million, five hundred sixty-three thousand, two hundred twenty-seven".