87780863 has 8 divisors (see below), whose sum is σ = 88712400. Its totient is φ = 86853888.

The previous prime is 87780859. The next prime is 87780881. The reversal of 87780863 is 36808778.

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 87780863 - 2² = 87780859 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 (87780263) 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, 48173 + ... + 49961.

It is an arithmetic number, because the mean of its divisors is an integer number (11089050).

Almost surely, 2^87780863 is an apocalyptic number.

87780863 is a deficient number, since it is larger than the sum of its proper divisors (931537).

87780863 is a wasteful number, since it uses less digits than its factorization.

87780863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 87780863 is about 9369.1441978443. The cubic root of 87780863 is about 444.4265018845.

The spelling of 87780863 in words is "eighty-seven million, seven hundred eighty thousand, eight hundred sixty-three".