73266813 has 12 divisors (see below), whose sum is σ = 105904188. Its totient is φ = 48810240.

The previous prime is 73266773. The next prime is 73266863. The reversal of 73266813 is 31866237.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36324729 + 36942084 = 6027^2 + 6078^2 .

It is not a de Polignac number, because 73266813 - 2⁹ = 73266301 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73266863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22573 + ... + 25613.

It is an arithmetic number, because the mean of its divisors is an integer number (8825349).

Almost surely, 2^73266813 is an apocalyptic number.

It is an amenable number.

73266813 is a deficient number, since it is larger than the sum of its proper divisors (32637375).

73266813 is a wasteful number, since it uses less digits than its factorization.

73266813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724 (or 5721 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 73266813 is about 8559.6035539037. The cubic root of 73266813 is about 418.4424795583.

The spelling of 73266813 in words is "seventy-three million, two hundred sixty-six thousand, eight hundred thirteen".