7145806 has 4 divisors (see below), whose sum is σ = 10718712. Its totient is φ = 3572902.

The previous prime is 7145759. The next prime is 7145813. The reversal of 7145806 is 6085417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6085417 = 13 ⋅468109.

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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1786450 + ... + 1786453.

It is an arithmetic number, because the mean of its divisors is an integer number (2679678).

Almost surely, 2^7145806 is an apocalyptic number.

7145806 is a deficient number, since it is larger than the sum of its proper divisors (3572906).

7145806 is a wasteful number, since it uses less digits than its factorization.

7145806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572905.

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

The square root of 7145806 is about 2673.1640428526. The cubic root of 7145806 is about 192.6121772664.

The spelling of 7145806 in words is "seven million, one hundred forty-five thousand, eight hundred six".