7136645 has 4 divisors (see below), whose sum is σ = 8563980. Its totient is φ = 5709312.

The previous prime is 7136627. The next prime is 7136659. The reversal of 7136645 is 5466317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5466317 = 379 ⋅14423.

It can be written as a sum of positive squares in 2 ways, for example, as 4919524 + 2217121 = 2218^2 + 1489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7136645 is a prime.

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, 713660 + ... + 713669.

It is an arithmetic number, because the mean of its divisors is an integer number (2140995).

Almost surely, 2^7136645 is an apocalyptic number.

It is an amenable number.

7136645 is a deficient number, since it is larger than the sum of its proper divisors (1427335).

7136645 is a wasteful number, since it uses less digits than its factorization.

7136645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427334.

The product of its digits is 15120, while the sum is 32.

The square root of 7136645 is about 2671.4499808157. The cubic root of 7136645 is about 192.5298317741.

The spelling of 7136645 in words is "seven million, one hundred thirty-six thousand, six hundred forty-five".