7649145 has 36 divisors (see below), whose sum is σ = 15427620. Its totient is φ = 3495744.

The previous prime is 7649143. The next prime is 7649177. The reversal of 7649145 is 5419467.

7649145 is a `hidden beast` number, since 7 + 649 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 6456681 = 1092^2 + 2541^2 .

It is not a de Polignac number, because 7649145 - 2¹ = 7649143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7649143) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 471 + ... + 3939.

It is an arithmetic number, because the mean of its divisors is an integer number (428545).

Almost surely, 2^7649145 is an apocalyptic number.

It is an amenable number.

7649145 is an abundant number, since it is smaller than the sum of its proper divisors (7778475).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7649145 is a wasteful number, since it uses less digits than its factorization.

7649145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494 (or 3484 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 7649145 is about 2765.7087699178. The cubic root of 7649145 is about 197.0323926567.

The spelling of 7649145 in words is "seven million, six hundred forty-nine thousand, one hundred forty-five".