82907321 has 8 divisors (see below), whose sum is σ = 94895424. Its totient is φ = 70955280.

The previous prime is 82907291. The next prime is 82907323. The reversal of 82907321 is 12370928.

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 82907321 - 2⁶ = 82907257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82907323) 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, 3890 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (11861928).

Almost surely, 2^82907321 is an apocalyptic number.

It is an amenable number.

82907321 is a deficient number, since it is larger than the sum of its proper divisors (11988103).

82907321 is a wasteful number, since it uses less digits than its factorization.

82907321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 82907321 is about 9105.3457375324. The cubic root of 82907321 is about 436.0446483048.

The spelling of 82907321 in words is "eighty-two million, nine hundred seven thousand, three hundred twenty-one".