87782461 has 8 divisors (see below), whose sum is σ = 94607744. Its totient is φ = 80967600.

The previous prime is 87782459. The next prime is 87782521. The reversal of 87782461 is 16428778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87782461 - 2¹ = 87782459 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 (87782411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31840 + ... + 34486.

It is an arithmetic number, because the mean of its divisors is an integer number (11825968).

Almost surely, 2^87782461 is an apocalyptic number.

It is an amenable number.

87782461 is a deficient number, since it is larger than the sum of its proper divisors (6825283).

87782461 is a wasteful number, since it uses less digits than its factorization.

87782461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211.

The product of its digits is 150528, while the sum is 43.

The square root of 87782461 is about 9369.2294773903. The cubic root of 87782461 is about 444.4291987108.

It can be divided in two parts, 877 and 82461, that added together give a palindrome (83338).

The spelling of 87782461 in words is "eighty-seven million, seven hundred eighty-two thousand, four hundred sixty-one".