72471605 has 16 divisors (see below), whose sum is σ = 91756800. Its totient is φ = 54797760.

The previous prime is 72471577. The next prime is 72471611. The reversal of 72471605 is 50617427.

It is not a de Polignac number, because 72471605 - 2⁸ = 72471349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67775 + ... + 68835.

It is an arithmetic number, because the mean of its divisors is an integer number (5734800).

Almost surely, 2^72471605 is an apocalyptic number.

It is an amenable number.

72471605 is a deficient number, since it is larger than the sum of its proper divisors (19285195).

72471605 is a wasteful number, since it uses less digits than its factorization.

72471605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 72471605 is about 8513.0256078553. The cubic root of 72471605 is about 416.9231015242.

The spelling of 72471605 in words is "seventy-two million, four hundred seventy-one thousand, six hundred five".