83679945 has 8 divisors (see below), whose sum is σ = 133887936. Its totient is φ = 44629296.

The previous prime is 83679941. The next prime is 83679949. The reversal of 83679945 is 54997638.

It is an interprime number because it is at equal distance from previous prime (83679941) and next prime (83679949).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83679945 - 2² = 83679941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83679941) 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, 2789317 + ... + 2789346.

It is an arithmetic number, because the mean of its divisors is an integer number (16735992).

Almost surely, 2^83679945 is an apocalyptic number.

It is an amenable number.

83679945 is a deficient number, since it is larger than the sum of its proper divisors (50207991).

83679945 is a wasteful number, since it uses less digits than its factorization.

83679945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578671.

The product of its digits is 1632960, while the sum is 51.

The square root of 83679945 is about 9147.6742945953. The cubic root of 83679945 is about 437.3949810514.

The spelling of 83679945 in words is "eighty-three million, six hundred seventy-nine thousand, nine hundred forty-five".