72774463 has 2 divisors, whose sum is σ = 72774464. Its totient is φ = 72774462.

The previous prime is 72774451. The next prime is 72774469. The reversal of 72774463 is 36447727.

It is a strong prime.

It is an emirp because it is prime and its reverse (36447727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72774463 - 2⁹ = 72773951 is a prime.

It is a super-2 number, since 2×72774463² = 10592244929876738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72774469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36387231 + 36387232.

It is an arithmetic number, because the mean of its divisors is an integer number (36387232).

Almost surely, 2^72774463 is an apocalyptic number.

72774463 is a deficient number, since it is larger than the sum of its proper divisors (1).

72774463 is an equidigital number, since it uses as much as digits as its factorization.

72774463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 40.

The square root of 72774463 is about 8530.7949805396. The cubic root of 72774463 is about 417.5030666585.

It can be divided in two parts, 72774 and 463, that added together give a palindrome (73237).

The spelling of 72774463 in words is "seventy-two million, seven hundred seventy-four thousand, four hundred sixty-three".