77513323 has 2 divisors, whose sum is σ = 77513324. Its totient is φ = 77513322.

The previous prime is 77513321. The next prime is 77513333. The reversal of 77513323 is 32331577.

It is a weak prime.

It is an emirp because it is prime and its reverse (32331577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77513323 - 2¹ = 77513321 is a prime.

Together with 77513321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (77513321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38756661 + 38756662.

It is an arithmetic number, because the mean of its divisors is an integer number (38756662).

Almost surely, 2^77513323 is an apocalyptic number.

77513323 is a deficient number, since it is larger than the sum of its proper divisors (1).

77513323 is an equidigital number, since it uses as much as digits as its factorization.

77513323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 31.

The square root of 77513323 is about 8804.1650938632. The cubic root of 77513323 is about 426.3753790489.

The spelling of 77513323 in words is "seventy-seven million, five hundred thirteen thousand, three hundred twenty-three".