72859783 has 2 divisors, whose sum is σ = 72859784. Its totient is φ = 72859782.

The previous prime is 72859741. The next prime is 72859793. The reversal of 72859783 is 38795827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72859783 - 2⁹ = 72859271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72859723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429891 + 36429892.

It is an arithmetic number, because the mean of its divisors is an integer number (36429892).

Almost surely, 2^72859783 is an apocalyptic number.

72859783 is a deficient number, since it is larger than the sum of its proper divisors (1).

72859783 is an equidigital number, since it uses as much as digits as its factorization.

72859783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 72859783 is about 8535.7942219808. The cubic root of 72859783 is about 417.6661616442. Note that the first 3 decimals are identical.

The spelling of 72859783 in words is "seventy-two million, eight hundred fifty-nine thousand, seven hundred eighty-three".