378750066 has 16 divisors (see below), whose sum is σ = 797368800. Its totient is φ = 119605248.

The previous prime is 378750049. The next prime is 378750067. The reversal of 378750066 is 660057873.

378750066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×378750066² = 286903224990008712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378750067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661071 + ... + 1661298.

It is an arithmetic number, because the mean of its divisors is an integer number (49835550).

Almost surely, 2^378750066 is an apocalyptic number.

378750066 is an abundant number, since it is smaller than the sum of its proper divisors (418618734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378750066 is a wasteful number, since it uses less digits than its factorization.

378750066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322393.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 378750066 is about 19461.5021516840. The cubic root of 378750066 is about 723.5206081855.

The spelling of 378750066 in words is "three hundred seventy-eight million, seven hundred fifty thousand, sixty-six".