76644133 has 2 divisors, whose sum is σ = 76644134. Its totient is φ = 76644132.

The previous prime is 76644097. The next prime is 76644137. The reversal of 76644133 is 33144667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62378404 + 14265729 = 7898^2 + 3777^2 .

It is an emirp because it is prime and its reverse (33144667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76644133 - 2¹³ = 76635941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76644137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322066 + 38322067.

It is an arithmetic number, because the mean of its divisors is an integer number (38322067).

Almost surely, 2^76644133 is an apocalyptic number.

It is an amenable number.

76644133 is a deficient number, since it is larger than the sum of its proper divisors (1).

76644133 is an equidigital number, since it uses as much as digits as its factorization.

76644133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 34.

The square root of 76644133 is about 8754.6635001010. The cubic root of 76644133 is about 424.7756749270.

The spelling of 76644133 in words is "seventy-six million, six hundred forty-four thousand, one hundred thirty-three".