73405905 has 8 divisors (see below), whose sum is σ = 117449472. Its totient is φ = 39149808.

The previous prime is 73405883. The next prime is 73405907. The reversal of 73405905 is 50950437.

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

It is not a de Polignac number, because 73405905 - 2⁸ = 73405649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73405907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2446849 + ... + 2446878.

It is an arithmetic number, because the mean of its divisors is an integer number (14681184).

Almost surely, 2^73405905 is an apocalyptic number.

It is an amenable number.

73405905 is a deficient number, since it is larger than the sum of its proper divisors (44043567).

73405905 is a wasteful number, since it uses less digits than its factorization.

73405905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893735.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 73405905 is about 8567.7246104202. The cubic root of 73405905 is about 418.7071069157.

The spelling of 73405905 in words is "seventy-three million, four hundred five thousand, nine hundred five".