7115645 has 4 divisors (see below), whose sum is σ = 8538780. Its totient is φ = 5692512.

The previous prime is 7115627. The next prime is 7115651. The reversal of 7115645 is 5465117.

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 755161 + 6360484 = 869^2 + 2522^2 .

It is a cyclic number.

It is not a de Polignac number, because 7115645 - 2⁸ = 7115389 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, 711560 + ... + 711569.

It is an arithmetic number, because the mean of its divisors is an integer number (2134695).

Almost surely, 2^7115645 is an apocalyptic number.

It is an amenable number.

7115645 is a deficient number, since it is larger than the sum of its proper divisors (1423135).

7115645 is a wasteful number, since it uses less digits than its factorization.

7115645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423134.

The product of its digits is 4200, while the sum is 29.

The square root of 7115645 is about 2667.5166353746. The cubic root of 7115645 is about 192.3408027707.

It can be divided in two parts, 71 and 15645, that multiplied together give a triangular number (1110795 = T₁₄₉₀).

The spelling of 7115645 in words is "seven million, one hundred fifteen thousand, six hundred forty-five".