7642205 has 4 divisors (see below), whose sum is σ = 9170652. Its totient is φ = 6113760.

The previous prime is 7642183. The next prime is 7642241. The reversal of 7642205 is 5022467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5022467 = 47 ⋅106861.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 6340324 = 1141^2 + 2518^2 .

It is not a de Polignac number, because 7642205 - 2¹⁶ = 7576669 is a prime.

It is a Duffinian number.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 764216 + ... + 764225.

It is an arithmetic number, because the mean of its divisors is an integer number (2292663).

Almost surely, 2^7642205 is an apocalyptic number.

It is an amenable number.

7642205 is a deficient number, since it is larger than the sum of its proper divisors (1528447).

7642205 is a wasteful number, since it uses less digits than its factorization.

7642205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528446.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7642205 is about 2764.4538339426. The cubic root of 7642205 is about 196.9727860576.

The spelling of 7642205 in words is "seven million, six hundred forty-two thousand, two hundred five".