7378645 has 4 divisors (see below), whose sum is σ = 8854380. Its totient is φ = 5902912.

The previous prime is 7378639. The next prime is 7378661. The reversal of 7378645 is 5468737.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1954404 + 5424241 = 1398^2 + 2329^2 .

It is a cyclic number.

It is not a de Polignac number, because 7378645 - 2¹⁷ = 7247573 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7378598 and 7378607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737860 + ... + 737869.

It is an arithmetic number, because the mean of its divisors is an integer number (2213595).

Almost surely, 2^7378645 is an apocalyptic number.

It is an amenable number.

7378645 is a deficient number, since it is larger than the sum of its proper divisors (1475735).

7378645 is a wasteful number, since it uses less digits than its factorization.

7378645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475734.

The product of its digits is 141120, while the sum is 40.

The square root of 7378645 is about 2716.3661387965. The cubic root of 7378645 is about 194.6818832453.

The spelling of 7378645 in words is "seven million, three hundred seventy-eight thousand, six hundred forty-five".