7645018 has 4 divisors (see below), whose sum is σ = 11467530. Its totient is φ = 3822508.

The previous prime is 7645007. The next prime is 7645061. The reversal of 7645018 is 8105467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8105467 = 191 ⋅42437.

It can be written as a sum of positive squares in only one way, i.e., 3908529 + 3736489 = 1977^2 + 1933^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1911253 + ... + 1911256.

Almost surely, 2^7645018 is an apocalyptic number.

7645018 is a deficient number, since it is larger than the sum of its proper divisors (3822512).

7645018 is a wasteful number, since it uses less digits than its factorization.

7645018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822511.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 7645018 is about 2764.9625675586. The cubic root of 7645018 is about 196.9969508319.

The spelling of 7645018 in words is "seven million, six hundred forty-five thousand, eighteen".