380705517 has 6 divisors (see below), whose sum is σ = 549907982. Its totient is φ = 253803672.

The previous prime is 380705491. The next prime is 380705537. The reversal of 380705517 is 715507083.

380705517 is a `hidden beast` number, since 38 + 0 + 70 + 551 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 375816996 + 4888521 = 19386^2 + 2211^2 .

It is not a de Polignac number, because 380705517 - 2¹¹ = 380703469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380705537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21150298 + ... + 21150315.

Almost surely, 2^380705517 is an apocalyptic number.

It is an amenable number.

380705517 is a deficient number, since it is larger than the sum of its proper divisors (169202465).

380705517 is a wasteful number, since it uses less digits than its factorization.

380705517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42300619 (or 42300616 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 380705517 is about 19511.6764272064. The cubic root of 380705517 is about 724.7636277396.

The spelling of 380705517 in words is "three hundred eighty million, seven hundred five thousand, five hundred seventeen".