116421687 has 6 divisors (see below), whose sum is σ = 168164672. Its totient is φ = 77614452.

The previous prime is 116421629. The next prime is 116421703. The reversal of 116421687 is 786124611.

It is a happy number.

116421687 is a `hidden beast` number, since 1 + 1 + 642 + 1 + 6 + 8 + 7 = 666.

It is not a de Polignac number, because 116421687 - 2¹² = 116417591 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 (116421587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6467863 + ... + 6467880.

Almost surely, 2^116421687 is an apocalyptic number.

116421687 is a deficient number, since it is larger than the sum of its proper divisors (51742985).

116421687 is a wasteful number, since it uses less digits than its factorization.

116421687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935749 (or 12935746 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 116421687 is about 10789.8881829239. Note that the first 3 decimals coincide. The cubic root of 116421687 is about 488.2901489948.

The spelling of 116421687 in words is "one hundred sixteen million, four hundred twenty-one thousand, six hundred eighty-seven".