378220671 has 20 divisors (see below), whose sum is σ = 589564272. Its totient is φ = 241183008.

The previous prime is 378220657. The next prime is 378220673. The reversal of 378220671 is 176022873.

378220671 is a `hidden beast` number, since 378 + 220 + 67 + 1 = 666.

It is not a de Polignac number, because 378220671 - 2¹⁸ = 377958527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378220673) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99646 + ... + 103371.

Almost surely, 2^378220671 is an apocalyptic number.

378220671 is a deficient number, since it is larger than the sum of its proper divisors (211343601).

378220671 is a wasteful number, since it uses less digits than its factorization.

378220671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203052 (or 203043 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 378220671 is about 19447.8963129692. The cubic root of 378220671 is about 723.1833525441.

The spelling of 378220671 in words is "three hundred seventy-eight million, two hundred twenty thousand, six hundred seventy-one".