83687090 has 32 divisors (see below), whose sum is σ = 159957504. Its totient is φ = 31415040.

The previous prime is 83687089. The next prime is 83687099. The reversal of 83687090 is 9078638.

It is not an unprimeable number, because it can be changed into a prime (83687099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102785 + ... + 103595.

It is an arithmetic number, because the mean of its divisors is an integer number (4998672).

Almost surely, 2^83687090 is an apocalyptic number.

83687090 is a deficient number, since it is larger than the sum of its proper divisors (76270414).

83687090 is a wasteful number, since it uses less digits than its factorization.

83687090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 83687090 is about 9148.0648226824. The cubic root of 83687090 is about 437.4074296662.

The spelling of 83687090 in words is "eighty-three million, six hundred eighty-seven thousand, ninety".