378613 has 4 divisors (see below), whose sum is σ = 398560. Its totient is φ = 358668.

The previous prime is 378601. The next prime is 378619. The reversal of 378613 is 316873.

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: 316873 = 71 ⋅4463.

It is a cyclic number.

It is not a de Polignac number, because 378613 - 2⁹ = 378101 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 (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, 9945 + ... + 9982.

It is an arithmetic number, because the mean of its divisors is an integer number (99640).

2³⁷⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

378613 is a deficient number, since it is larger than the sum of its proper divisors (19947).

378613 is a wasteful number, since it uses less digits than its factorization.

378613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19946.

The product of its digits is 3024, while the sum is 28.

The square root of 378613 is about 615.3153662960. The cubic root of 378613 is about 72.3433319276.

The spelling of 378613 in words is "three hundred seventy-eight thousand, six hundred thirteen".