73381563 has 24 divisors (see below), whose sum is σ = 107832816. Its totient is φ = 48081600.

The previous prime is 73381559. The next prime is 73381573. The reversal of 73381563 is 36518337.

It is not a de Polignac number, because 73381563 - 2² = 73381559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73381573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174093 + ... + 174513.

It is an arithmetic number, because the mean of its divisors is an integer number (4493034).

Almost surely, 2^73381563 is an apocalyptic number.

73381563 is a deficient number, since it is larger than the sum of its proper divisors (34451253).

73381563 is a wasteful number, since it uses less digits than its factorization.

73381563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 712 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 73381563 is about 8566.3039287665. The cubic root of 73381563 is about 418.6608195623.

The spelling of 73381563 in words is "seventy-three million, three hundred eighty-one thousand, five hundred sixty-three".