83145708 has 36 divisors (see below), whose sum is σ = 222538680. Its totient is φ = 26084736.

The previous prime is 83145707. The next prime is 83145721. The reversal of 83145708 is 80754138.

83145708 is a `hidden beast` number, since 83 + 1 + 4 + 570 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (83145707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67318 + ... + 68541.

It is an arithmetic number, because the mean of its divisors is an integer number (6181630).

Almost surely, 2^83145708 is an apocalyptic number.

It is an amenable number.

83145708 is an abundant number, since it is smaller than the sum of its proper divisors (139392972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83145708 is a wasteful number, since it uses less digits than its factorization.

83145708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135886 (or 135881 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 83145708 is about 9118.4268380023. The cubic root of 83145708 is about 436.4621743851.

The spelling of 83145708 in words is "eighty-three million, one hundred forty-five thousand, seven hundred eight".