87678361 has 4 divisors (see below), whose sum is σ = 87857424. Its totient is φ = 87499300.

The previous prime is 87678347. The next prime is 87678373. The reversal of 87678361 is 16387678.

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 87678361 - 2⁷ = 87678233 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87678341) 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, 88795 + ... + 89776.

It is an arithmetic number, because the mean of its divisors is an integer number (21964356).

Almost surely, 2^87678361 is an apocalyptic number.

It is an amenable number.

87678361 is a deficient number, since it is larger than the sum of its proper divisors (179063).

87678361 is a wasteful number, since it uses less digits than its factorization.

87678361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179062.

The product of its digits is 338688, while the sum is 46.

The square root of 87678361 is about 9363.6724099041. The cubic root of 87678361 is about 444.2534484167.

The spelling of 87678361 in words is "eighty-seven million, six hundred seventy-eight thousand, three hundred sixty-one".