378649 has 8 divisors (see below), whose sum is σ = 401472. Its totient is φ = 356400.

The previous prime is 378629. The next prime is 378661. The reversal of 378649 is 946873.

378649 is nontrivially palindromic in base 8.

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

It is a cyclic number.

It is not a de Polignac number, because 378649 - 2⁹ = 378137 is a prime.

It is an Ulam number.

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 7 ways as a sum of consecutive naturals, for example, 2242 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (50184).

2³⁷⁸⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

378649 is a deficient number, since it is larger than the sum of its proper divisors (22823).

378649 is a wasteful number, since it uses less digits than its factorization.

378649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its digits is 36288, while the sum is 37.

The square root of 378649 is about 615.3446188925. The cubic root of 378649 is about 72.3456247502.

It can be divided in two parts, 37864 and 9, that added together give a palindrome (37873).

The spelling of 378649 in words is "three hundred seventy-eight thousand, six hundred forty-nine".