378617 has 4 divisors (see below), whose sum is σ = 384336. Its totient is φ = 372900.

The previous prime is 378601. The next prime is 378619. The reversal of 378617 is 716873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 716873 = 17 ⋅42169.

It is a cyclic number.

It is not a de Polignac number, because 378617 - 2⁴ = 378601 is a prime.

It is a super-3 number, since 3×378617³ = 162825186660633339, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2759 + ... + 2892.

It is an arithmetic number, because the mean of its divisors is an integer number (96084).

2³⁷⁸⁶¹⁷ is an apocalyptic number.

It is an amenable number.

378617 is a deficient number, since it is larger than the sum of its proper divisors (5719).

378617 is an equidigital number, since it uses as much as digits as its factorization.

378617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718.

The product of its digits is 7056, while the sum is 32.

The square root of 378617 is about 615.3186166532. The cubic root of 378617 is about 72.3435866928.

The spelling of 378617 in words is "three hundred seventy-eight thousand, six hundred seventeen".