73564381 has 8 divisors (see below), whose sum is σ = 80353728. Its totient is φ = 66792000.

The previous prime is 73564367. The next prime is 73564411. The reversal of 73564381 is 18346537.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-73564381 is a prime.

It is a super-2 number, since 2×73564381² = 10823436303826322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73564381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73564301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5896 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (10044216).

Almost surely, 2^73564381 is an apocalyptic number.

It is an amenable number.

73564381 is a deficient number, since it is larger than the sum of its proper divisors (6789347).

73564381 is a wasteful number, since it uses less digits than its factorization.

73564381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8483.

The product of its digits is 60480, while the sum is 37.

The square root of 73564381 is about 8576.9680540387. The cubic root of 73564381 is about 419.0082059139.

The spelling of 73564381 in words is "seventy-three million, five hundred sixty-four thousand, three hundred eighty-one".