72383705 has 8 divisors (see below), whose sum is σ = 91969992. Its totient is φ = 54500608.

The previous prime is 72383699. The next prime is 72383809. The reversal of 72383705 is 50738327.

It can be written as a sum of positive squares in 4 ways, for example, as 524176 + 71859529 = 724^2 + 8477^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 72383705 - 2²⁰ = 71335129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425702 + ... + 425871.

It is an arithmetic number, because the mean of its divisors is an integer number (11496249).

Almost surely, 2^72383705 is an apocalyptic number.

It is an amenable number.

72383705 is a deficient number, since it is larger than the sum of its proper divisors (19586287).

72383705 is a wasteful number, since it uses less digits than its factorization.

72383705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851595.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 72383705 is about 8507.8613646439. The cubic root of 72383705 is about 416.7544728726.

The spelling of 72383705 in words is "seventy-two million, three hundred eighty-three thousand, seven hundred five".