72663499 has 2 divisors, whose sum is σ = 72663500. Its totient is φ = 72663498.

The previous prime is 72663401. The next prime is 72663511. The reversal of 72663499 is 99436627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72663499 - 2¹³ = 72655307 is a prime.

It is not a weakly prime, because it can be changed into another prime (72693499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36331749 + 36331750.

It is an arithmetic number, because the mean of its divisors is an integer number (36331750).

Almost surely, 2^72663499 is an apocalyptic number.

72663499 is a deficient number, since it is larger than the sum of its proper divisors (1).

72663499 is an equidigital number, since it uses as much as digits as its factorization.

72663499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 72663499 is about 8524.2887679853. The cubic root of 72663499 is about 417.2907606073.

The spelling of 72663499 in words is "seventy-two million, six hundred sixty-three thousand, four hundred ninety-nine".