7149605 has 24 divisors (see below), whose sum is σ = 9628632. Its totient is φ = 5078016.

The previous prime is 7149601. The next prime is 7149613. The reversal of 7149605 is 5069417.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 667489 + 6482116 = 817^2 + 2546^2 .

It is not a de Polignac number, because 7149605 - 2² = 7149601 is a prime.

It is a super-2 number, since 2×7149605² = 102233703312050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30569 + ... + 30801.

It is an arithmetic number, because the mean of its divisors is an integer number (401193).

Almost surely, 2^7149605 is an apocalyptic number.

It is an amenable number.

7149605 is a deficient number, since it is larger than the sum of its proper divisors (2479027).

7149605 is a wasteful number, since it uses less digits than its factorization.

7149605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 7149605 is about 2673.8745295918. The cubic root of 7149605 is about 192.6463046984.

The spelling of 7149605 in words is "seven million, one hundred forty-nine thousand, six hundred five".