7245818 has 4 divisors (see below), whose sum is σ = 10868730. Its totient is φ = 3622908.

The previous prime is 7245809. The next prime is 7245829. The reversal of 7245818 is 8185427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8185427 = 79 ⋅103613.

It can be written as a sum of positive squares in only one way, i.e., 5822569 + 1423249 = 2413^2 + 1193^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1811453 + ... + 1811456.

Almost surely, 2^7245818 is an apocalyptic number.

7245818 is a deficient number, since it is larger than the sum of its proper divisors (3622912).

7245818 is a wasteful number, since it uses less digits than its factorization.

7245818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622911.

The product of its digits is 17920, while the sum is 35.

The square root of 7245818 is about 2691.8057136428. The cubic root of 7245818 is about 193.5066110666.

The spelling of 7245818 in words is "seven million, two hundred forty-five thousand, eight hundred eighteen".