87776461 has 4 divisors (see below), whose sum is σ = 87979612. Its totient is φ = 87573312.

The previous prime is 87776443. The next prime is 87776477. The reversal of 87776461 is 16467778.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5148361 + 82628100 = 2269^2 + 9090^2 .

It is a cyclic number.

It is not a de Polignac number, because 87776461 - 2²³ = 79387853 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 (87776761) 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, 100926 + ... + 101791.

It is an arithmetic number, because the mean of its divisors is an integer number (21994903).

Almost surely, 2^87776461 is an apocalyptic number.

It is an amenable number.

87776461 is a deficient number, since it is larger than the sum of its proper divisors (203151).

87776461 is a wasteful number, since it uses less digits than its factorization.

87776461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203150.

The product of its digits is 395136, while the sum is 46.

The square root of 87776461 is about 9368.9092748302. The cubic root of 87776461 is about 444.4190727855.

The spelling of 87776461 in words is "eighty-seven million, seven hundred seventy-six thousand, four hundred sixty-one".