378651 has 32 divisors (see below), whose sum is σ = 663040. Its totient is φ = 186624.

The previous prime is 378629. The next prime is 378661. The reversal of 378651 is 156873.

It is not a de Polignac number, because 378651 - 2⁵ = 378619 is a prime.

It is a D-number.

378651 is an undulating number in base 9.

It is not an unprimeable number, because it can be changed into a prime (378601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5151 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (20720).

2³⁷⁸⁶⁵¹ is an apocalyptic number.

378651 is a deficient number, since it is larger than the sum of its proper divisors (284389).

378651 is a wasteful number, since it uses less digits than its factorization.

378651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115.

The product of its digits is 5040, while the sum is 30.

The square root of 378651 is about 615.3462439960. The cubic root of 378651 is about 72.3457521250.

The spelling of 378651 in words is "three hundred seventy-eight thousand, six hundred fifty-one".