72074447 has 2 divisors, whose sum is σ = 72074448. Its totient is φ = 72074446.

The previous prime is 72074393. The next prime is 72074449. The reversal of 72074447 is 74447027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72074447 - 2¹⁰ = 72073423 is a prime.

Together with 72074449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72074449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36037223 + 36037224.

It is an arithmetic number, because the mean of its divisors is an integer number (36037224).

Almost surely, 2^72074447 is an apocalyptic number.

72074447 is a deficient number, since it is larger than the sum of its proper divisors (1).

72074447 is an equidigital number, since it uses as much as digits as its factorization.

72074447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 35.

The square root of 72074447 is about 8489.6670723886. The cubic root of 72074447 is about 416.1601004049.

The spelling of 72074447 in words is "seventy-two million, seventy-four thousand, four hundred forty-seven".