87774727 has 4 divisors (see below), whose sum is σ = 89915616. Its totient is φ = 85633840.

The previous prime is 87774719. The next prime is 87774749. The reversal of 87774727 is 72747778.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87774727 - 2³ = 87774719 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 (87774787) 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, 1070383 + ... + 1070464.

It is an arithmetic number, because the mean of its divisors is an integer number (22478904).

Almost surely, 2^87774727 is an apocalyptic number.

87774727 is a deficient number, since it is larger than the sum of its proper divisors (2140889).

87774727 is a wasteful number, since it uses less digits than its factorization.

87774727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140888.

The product of its digits is 1075648, while the sum is 49.

The square root of 87774727 is about 9368.8167342520. The cubic root of 87774727 is about 444.4161463071.

The spelling of 87774727 in words is "eighty-seven million, seven hundred seventy-four thousand, seven hundred twenty-seven".