72340783 has 2 divisors, whose sum is σ = 72340784. Its totient is φ = 72340782.

The previous prime is 72340781. The next prime is 72340787. The reversal of 72340783 is 38704327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72340783 - 2¹ = 72340781 is a prime.

Together with 72340781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72340781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36170391 + 36170392.

It is an arithmetic number, because the mean of its divisors is an integer number (36170392).

Almost surely, 2^72340783 is an apocalyptic number.

72340783 is a deficient number, since it is larger than the sum of its proper divisors (1).

72340783 is an equidigital number, since it uses as much as digits as its factorization.

72340783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 72340783 is about 8505.3385000246. The cubic root of 72340783 is about 416.6720810674.

The spelling of 72340783 in words is "seventy-two million, three hundred forty thousand, seven hundred eighty-three".