381707697 has 24 divisors (see below), whose sum is σ = 599548800. Its totient is φ = 215351136.

The previous prime is 381707687. The next prime is 381707699. The reversal of 381707697 is 796707183.

It is a happy number.

It is not a de Polignac number, because 381707697 - 2¹⁰ = 381706673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381707699) 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 23 ways as a sum of consecutive naturals, for example, 4822 + ... + 28047.

It is an arithmetic number, because the mean of its divisors is an integer number (24981200).

Almost surely, 2^381707697 is an apocalyptic number.

It is an amenable number.

381707697 is a deficient number, since it is larger than the sum of its proper divisors (217841103).

381707697 is a wasteful number, since it uses less digits than its factorization.

381707697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32965 (or 32958 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 48.

The square root of 381707697 is about 19537.3410934037. The cubic root of 381707697 is about 725.3990332883.

The spelling of 381707697 in words is "three hundred eighty-one million, seven hundred seven thousand, six hundred ninety-seven".