385720671 has 32 divisors (see below), whose sum is σ = 611025408. Its totient is φ = 211835520.

The previous prime is 385720637. The next prime is 385720703. The reversal of 385720671 is 176027583.

It is not a de Polignac number, because 385720671 - 2⁶ = 385720607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385720171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61501 + ... + 67481.

It is an arithmetic number, because the mean of its divisors is an integer number (19094544).

Almost surely, 2^385720671 is an apocalyptic number.

385720671 is a deficient number, since it is larger than the sum of its proper divisors (225304737).

385720671 is a wasteful number, since it uses less digits than its factorization.

385720671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 385720671 is about 19639.7726819839. The cubic root of 385720671 is about 727.9322677545.

The spelling of 385720671 in words is "three hundred eighty-five million, seven hundred twenty thousand, six hundred seventy-one".