73405471 has 4 divisors (see below), whose sum is σ = 73637352. Its totient is φ = 73173592.

The previous prime is 73405469. The next prime is 73405511. The reversal of 73405471 is 17450437.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73405471 - 2¹ = 73405469 is a prime.

It is a super-3 number, since 3×73405471³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73405411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115465 + ... + 116098.

It is an arithmetic number, because the mean of its divisors is an integer number (18409338).

Almost surely, 2^73405471 is an apocalyptic number.

73405471 is a deficient number, since it is larger than the sum of its proper divisors (231881).

73405471 is a wasteful number, since it uses less digits than its factorization.

73405471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231880.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 73405471 is about 8567.6992827713. The cubic root of 73405471 is about 418.7062817357.

The spelling of 73405471 in words is "seventy-three million, four hundred five thousand, four hundred seventy-one".