83120691 has 8 divisors (see below), whose sum is σ = 111904000. Its totient is φ = 54875592.

The previous prime is 83120683. The next prime is 83120711. The reversal of 83120691 is 19602138.

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

It is not a de Polignac number, because 83120691 - 2³ = 83120683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83120621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134191 + ... + 134808.

It is an arithmetic number, because the mean of its divisors is an integer number (13988000).

Almost surely, 2^83120691 is an apocalyptic number.

83120691 is a deficient number, since it is larger than the sum of its proper divisors (28783309).

83120691 is a wasteful number, since it uses less digits than its factorization.

83120691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269105.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 83120691 is about 9117.0549521213. The cubic root of 83120691 is about 436.4183955388.

The spelling of 83120691 in words is "eighty-three million, one hundred twenty thousand, six hundred ninety-one".