7440605 has 4 divisors (see below), whose sum is σ = 8928732. Its totient is φ = 5952480.

The previous prime is 7440593. The next prime is 7440619. The reversal of 7440605 is 5060447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5060447 = 7 ⋅722921.

It can be written as a sum of positive squares in 2 ways, for example, as 3853369 + 3587236 = 1963^2 + 1894^2 .

It is not a de Polignac number, because 7440605 - 2¹² = 7436509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744056 + ... + 744065.

It is an arithmetic number, because the mean of its divisors is an integer number (2232183).

Almost surely, 2^7440605 is an apocalyptic number.

It is an amenable number.

7440605 is a deficient number, since it is larger than the sum of its proper divisors (1488127).

7440605 is a wasteful number, since it uses less digits than its factorization.

7440605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488126.

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

The square root of 7440605 is about 2727.7472390234. The cubic root of 7440605 is about 195.2252929719.

The spelling of 7440605 in words is "seven million, four hundred forty thousand, six hundred five".