378715 has 4 divisors (see below), whose sum is σ = 454464. Its totient is φ = 302968.

The previous prime is 378713. The next prime is 378733. The reversal of 378715 is 517873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 378715 - 2¹ = 378713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378715.

It is not an unprimeable number, because it can be changed into a prime (378713) 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, 37867 + ... + 37876.

It is an arithmetic number, because the mean of its divisors is an integer number (113616).

2³⁷⁸⁷¹⁵ is an apocalyptic number.

378715 is a deficient number, since it is larger than the sum of its proper divisors (75749).

378715 is an equidigital number, since it uses as much as digits as its factorization.

378715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75748.

The product of its digits is 5880, while the sum is 31.

The square root of 378715 is about 615.3982450414. The cubic root of 378715 is about 72.3498278811.

The spelling of 378715 in words is "three hundred seventy-eight thousand, seven hundred fifteen".