7345405 has 4 divisors (see below), whose sum is σ = 8814492. Its totient is φ = 5876320.

The previous prime is 7345363. The next prime is 7345423. The reversal of 7345405 is 5045437.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2859481 + 4485924 = 1691^2 + 2118^2 .

It is not a de Polignac number, because 7345405 - 2⁹ = 7344893 is a prime.

It is a super-2 number, since 2×7345405² = 107909949228050, which contains 22 as substring.

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, 734536 + ... + 734545.

It is an arithmetic number, because the mean of its divisors is an integer number (2203623).

Almost surely, 2^7345405 is an apocalyptic number.

It is an amenable number.

7345405 is a deficient number, since it is larger than the sum of its proper divisors (1469087).

7345405 is a wasteful number, since it uses less digits than its factorization.

7345405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469086.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 7345405 is about 2710.2407642127. The cubic root of 7345405 is about 194.3891028597.

Subtracting from 7345405 its reverse (5045437), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 7345 and 405, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 7345405 in words is "seven million, three hundred forty-five thousand, four hundred five".