72771383 has 2 divisors, whose sum is σ = 72771384. Its totient is φ = 72771382.

The previous prime is 72771323. The next prime is 72771421. The reversal of 72771383 is 38317727.

It is an a-pointer prime, because the next prime (72771421) can be obtained adding 72771383 to its sum of digits (38).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72771383 - 2¹² = 72767287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72771323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36385691 + 36385692.

It is an arithmetic number, because the mean of its divisors is an integer number (36385692).

Almost surely, 2^72771383 is an apocalyptic number.

72771383 is a deficient number, since it is larger than the sum of its proper divisors (1).

72771383 is an equidigital number, since it uses as much as digits as its factorization.

72771383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The square root of 72771383 is about 8530.6144561808. The cubic root of 72771383 is about 417.4971766455.

The spelling of 72771383 in words is "seventy-two million, seven hundred seventy-one thousand, three hundred eighty-three".