83461987 has 16 divisors (see below), whose sum is σ = 96796672. Its totient is φ = 70489440.

The previous prime is 83461957. The next prime is 83461997. The reversal of 83461987 is 78916438.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-83461987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83461957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198037 + ... + 198457.

It is an arithmetic number, because the mean of its divisors is an integer number (6049792).

Almost surely, 2^83461987 is an apocalyptic number.

83461987 is a deficient number, since it is larger than the sum of its proper divisors (13334685).

83461987 is a wasteful number, since it uses less digits than its factorization.

83461987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its digits is 290304, while the sum is 46.

The square root of 83461987 is about 9135.7532256514. The cubic root of 83461987 is about 437.0148954527.

It can be divided in two parts, 83461 and 987, that added together give a palindrome (84448).

The spelling of 83461987 in words is "eighty-three million, four hundred sixty-one thousand, nine hundred eighty-seven".