83628687 has 16 divisors (see below), whose sum is σ = 113155328. Its totient is φ = 54933120.

The previous prime is 83628659. The next prime is 83628733. The reversal of 83628687 is 78682638.

It is a happy number.

It is not a de Polignac number, because 83628687 - 2¹² = 83624591 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 (83628487) 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, 73908 + ... + 75030.

It is an arithmetic number, because the mean of its divisors is an integer number (7072208).

Almost surely, 2^83628687 is an apocalyptic number.

83628687 is a deficient number, since it is larger than the sum of its proper divisors (29526641).

83628687 is a wasteful number, since it uses less digits than its factorization.

83628687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470.

The product of its digits is 774144, while the sum is 48.

The square root of 83628687 is about 9144.8721696916. The cubic root of 83628687 is about 437.3056543066.

The spelling of 83628687 in words is "eighty-three million, six hundred twenty-eight thousand, six hundred eighty-seven".