83661110 has 16 divisors (see below), whose sum is σ = 162174096. Its totient is φ = 30890208.

The previous prime is 83661103. The next prime is 83661113. The reversal of 83661110 is 1116638.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 83661110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83661113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321644 + ... + 321903.

It is an arithmetic number, because the mean of its divisors is an integer number (10135881).

Almost surely, 2^83661110 is an apocalyptic number.

83661110 is a deficient number, since it is larger than the sum of its proper divisors (78512986).

83661110 is a wasteful number, since it uses less digits than its factorization.

83661110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643567.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 83661110 is about 9146.6447400126. The cubic root of 83661110 is about 437.3621617475.

Adding to 83661110 its reverse (1116638), we get a palindrome (84777748).

The spelling of 83661110 in words is "eighty-three million, six hundred sixty-one thousand, one hundred ten".