380616721 has 8 divisors (see below), whose sum is σ = 400830080. Its totient is φ = 360421488.

The previous prime is 380616679. The next prime is 380616727. The reversal of 380616721 is 127616083.

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

It is not a de Polignac number, because 380616721 - 2¹¹ = 380614673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380616727) 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, 71080 + ... + 76246.

It is an arithmetic number, because the mean of its divisors is an integer number (50103760).

Almost surely, 2^380616721 is an apocalyptic number.

It is an amenable number.

380616721 is a deficient number, since it is larger than the sum of its proper divisors (20213359).

380616721 is a wasteful number, since it uses less digits than its factorization.

380616721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 380616721 is about 19509.4008365198. The cubic root of 380616721 is about 724.7072752464.

The spelling of 380616721 in words is "three hundred eighty million, six hundred sixteen thousand, seven hundred twenty-one".