83679857 has 8 divisors (see below), whose sum is σ = 88505760. Its totient is φ = 78896160.

The previous prime is 83679839. The next prime is 83679889. The reversal of 83679857 is 75897638.

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

It is a cyclic number.

It is not a de Polignac number, because 83679857 - 2⁶ = 83679793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83679799 and 83679808.

It is not an unprimeable number, because it can be changed into a prime (83679257) 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, 6428 + ... + 14445.

It is an arithmetic number, because the mean of its divisors is an integer number (11063220).

Almost surely, 2^83679857 is an apocalyptic number.

It is an amenable number.

83679857 is a deficient number, since it is larger than the sum of its proper divisors (4825903).

83679857 is a wasteful number, since it uses less digits than its factorization.

83679857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21103.

The product of its digits is 2540160, while the sum is 53.

The square root of 83679857 is about 9147.6694846283. The cubic root of 83679857 is about 437.3948277261.

The spelling of 83679857 in words is "eighty-three million, six hundred seventy-nine thousand, eight hundred fifty-seven".