7634645 has 4 divisors (see below), whose sum is σ = 9161580. Its totient is φ = 6107712.

The previous prime is 7634629. The next prime is 7634647. The reversal of 7634645 is 5464367.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5464367 = 467 ⋅11701.

It can be written as a sum of positive squares in 2 ways, for example, as 879844 + 6754801 = 938^2 + 2599^2 .

It is a cyclic number.

It is not a de Polignac number, because 7634645 - 2⁴ = 7634629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7634647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763460 + ... + 763469.

It is an arithmetic number, because the mean of its divisors is an integer number (2290395).

Almost surely, 2^7634645 is an apocalyptic number.

It is an amenable number.

7634645 is a deficient number, since it is larger than the sum of its proper divisors (1526935).

7634645 is a wasteful number, since it uses less digits than its factorization.

7634645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526934.

The product of its digits is 60480, while the sum is 35.

The square root of 7634645 is about 2763.0861369129. The cubic root of 7634645 is about 196.9078132928.

The spelling of 7634645 in words is "seven million, six hundred thirty-four thousand, six hundred forty-five".