72064403 has 2 divisors, whose sum is σ = 72064404. Its totient is φ = 72064402.

The previous prime is 72064381. The next prime is 72064423. The reversal of 72064403 is 30446027.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72064403 - 2⁶ = 72064339 is a prime.

It is not a weakly prime, because it can be changed into another prime (72064423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36032201 + 36032202.

It is an arithmetic number, because the mean of its divisors is an integer number (36032202).

Almost surely, 2^72064403 is an apocalyptic number.

72064403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72064403 is an equidigital number, since it uses as much as digits as its factorization.

72064403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 72064403 is about 8489.0755091470. The cubic root of 72064403 is about 416.1407680506.

The spelling of 72064403 in words is "seventy-two million, sixty-four thousand, four hundred three".