87760861 has 4 divisors (see below), whose sum is σ = 87992800. Its totient is φ = 87528924.

The previous prime is 87760859. The next prime is 87760877. The reversal of 87760861 is 16806778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87760861 - 2¹ = 87760859 is a prime.

It is a super-2 number, since 2×87760861² = 15403937446922642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87760831) 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, 115401 + ... + 116158.

It is an arithmetic number, because the mean of its divisors is an integer number (21998200).

Almost surely, 2^87760861 is an apocalyptic number.

It is an amenable number.

87760861 is a deficient number, since it is larger than the sum of its proper divisors (231939).

87760861 is a wasteful number, since it uses less digits than its factorization.

87760861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231938.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 87760861 is about 9368.0766969533. The cubic root of 87760861 is about 444.3927432197.

The spelling of 87760861 in words is "eighty-seven million, seven hundred sixty thousand, eight hundred sixty-one".