83721027 has 8 divisors (see below), whose sum is σ = 120214864. Its totient is φ = 51520608.

The previous prime is 83721023. The next prime is 83721031. The reversal of 83721027 is 72012738.

It is an interprime number because it is at equal distance from previous prime (83721023) and next prime (83721031).

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

It is not a de Polignac number, because 83721027 - 2² = 83721023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83720985 and 83721003.

It is not an unprimeable number, because it can be changed into a prime (83721023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073308 + ... + 1073385.

It is an arithmetic number, because the mean of its divisors is an integer number (15026858).

Almost surely, 2^83721027 is an apocalyptic number.

83721027 is a deficient number, since it is larger than the sum of its proper divisors (36493837).

83721027 is a wasteful number, since it uses less digits than its factorization.

83721027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146709.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 83721027 is about 9149.9195078427. The cubic root of 83721027 is about 437.4665478640.

The spelling of 83721027 in words is "eighty-three million, seven hundred twenty-one thousand, twenty-seven".