380690 has 8 divisors (see below), whose sum is σ = 685260. Its totient is φ = 152272.

The previous prime is 380657. The next prime is 380707. The reversal of 380690 is 96083.

It is a happy number.

380690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 617²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 1 = 617^2 + 1^2 .

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

It is a super-2 number, since 2×380690² = 289849752200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19025 + ... + 19044.

2³⁸⁰⁶⁹⁰ is an apocalyptic number.

380690 is a deficient number, since it is larger than the sum of its proper divisors (304570).

380690 is a wasteful number, since it uses less digits than its factorization.

380690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38076.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 380690 is about 617.0008103722. Note that the first 3 decimals coincide. The cubic root of 380690 is about 72.4753780837.

The spelling of 380690 in words is "three hundred eighty thousand, six hundred ninety".