77270983 has 2 divisors, whose sum is σ = 77270984. Its totient is φ = 77270982.

The previous prime is 77270951. The next prime is 77270987. The reversal of 77270983 is 38907277.

It is a strong prime.

It is an emirp because it is prime and its reverse (38907277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77270983 - 2⁵ = 77270951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77270987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38635491 + 38635492.

It is an arithmetic number, because the mean of its divisors is an integer number (38635492).

Almost surely, 2^77270983 is an apocalyptic number.

77270983 is a deficient number, since it is larger than the sum of its proper divisors (1).

77270983 is an equidigital number, since it uses as much as digits as its factorization.

77270983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 77270983 is about 8790.3915157404. The cubic root of 77270983 is about 425.9305708741.

The spelling of 77270983 in words is "seventy-seven million, two hundred seventy thousand, nine hundred eighty-three".