83681694 has 32 divisors (see below), whose sum is σ = 186416640. Its totient is φ = 27825336.

The previous prime is 83681693. The next prime is 83681699. The reversal of 83681694 is 49618638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83681693) 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, 23329 + ... + 26675.

It is an arithmetic number, because the mean of its divisors is an integer number (5825520).

Almost surely, 2^83681694 is an apocalyptic number.

83681694 is an abundant number, since it is smaller than the sum of its proper divisors (102734946).

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

83681694 is a wasteful number, since it uses less digits than its factorization.

83681694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3815 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 83681694 is about 9147.7698921650. The cubic root of 83681694 is about 437.3980283706.

The spelling of 83681694 in words is "eighty-three million, six hundred eighty-one thousand, six hundred ninety-four".