72366403 has 2 divisors, whose sum is σ = 72366404. Its totient is φ = 72366402.

The previous prime is 72366401. The next prime is 72366451. The reversal of 72366403 is 30466327.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72366403 - 2¹ = 72366401 is a prime.

Together with 72366401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72366401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36183201 + 36183202.

It is an arithmetic number, because the mean of its divisors is an integer number (36183202).

Almost surely, 2^72366403 is an apocalyptic number.

72366403 is a deficient number, since it is larger than the sum of its proper divisors (1).

72366403 is an equidigital number, since it uses as much as digits as its factorization.

72366403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 72366403 is about 8506.8444795941. The cubic root of 72366403 is about 416.7212643833.

The spelling of 72366403 in words is "seventy-two million, three hundred sixty-six thousand, four hundred three".