7236913 has 4 divisors (see below), whose sum is σ = 7255540. Its totient is φ = 7218288.

The previous prime is 7236899. The next prime is 7236937. The reversal of 7236913 is 3196327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3196327 = 1151 ⋅2777.

It can be written as a sum of positive squares in 2 ways, for example, as 6517809 + 719104 = 2553^2 + 848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7236913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7236013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8718 + ... + 9511.

It is an arithmetic number, because the mean of its divisors is an integer number (1813885).

Almost surely, 2^7236913 is an apocalyptic number.

It is an amenable number.

7236913 is a deficient number, since it is larger than the sum of its proper divisors (18627).

7236913 is a wasteful number, since it uses less digits than its factorization.

7236913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626.

The product of its digits is 6804, while the sum is 31.

The square root of 7236913 is about 2690.1511109973. The cubic root of 7236913 is about 193.4273063434.

The spelling of 7236913 in words is "seven million, two hundred thirty-six thousand, nine hundred thirteen".