7487745 has 8 divisors (see below), whose sum is σ = 11980416. Its totient is φ = 3993456.

The previous prime is 7487743. The next prime is 7487747. The reversal of 7487745 is 5477847.

It is an interprime number because it is at equal distance from previous prime (7487743) and next prime (7487747).

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

It is not a de Polignac number, because 7487745 - 2¹ = 7487743 is a prime.

It is a Smith number, since the sum of its digits (42) 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 = 7487697 and 7487706.

It is not an unprimeable number, because it can be changed into a prime (7487741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249577 + ... + 249606.

It is an arithmetic number, because the mean of its divisors is an integer number (1497552).

Almost surely, 2^7487745 is an apocalyptic number.

It is an amenable number.

7487745 is a deficient number, since it is larger than the sum of its proper divisors (4492671).

7487745 is a wasteful number, since it uses less digits than its factorization.

7487745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499191.

The product of its digits is 219520, while the sum is 42.

The square root of 7487745 is about 2736.3744261340. The cubic root of 7487745 is about 195.6367090407.

The spelling of 7487745 in words is "seven million, four hundred eighty-seven thousand, seven hundred forty-five".