4378645 has 8 divisors (see below), whose sum is σ = 5531040. Its totient is φ = 3318480.

The previous prime is 4378631. The next prime is 4378697. The reversal of 4378645 is 5468734.

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

It is not a de Polignac number, because 4378645 - 2⁹ = 4378133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22951 + ... + 23140.

It is an arithmetic number, because the mean of its divisors is an integer number (691380).

Almost surely, 2^4378645 is an apocalyptic number.

It is an amenable number.

4378645 is a deficient number, since it is larger than the sum of its proper divisors (1152395).

4378645 is a wasteful number, since it uses less digits than its factorization.

4378645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46115.

The product of its digits is 80640, while the sum is 37.

The square root of 4378645 is about 2092.5212065831. The cubic root of 4378645 is about 163.5987239934.

The spelling of 4378645 in words is "four million, three hundred seventy-eight thousand, six hundred forty-five".