77072323 has 2 divisors, whose sum is σ = 77072324. Its totient is φ = 77072322.

The previous prime is 77072269. The next prime is 77072327. The reversal of 77072323 is 32327077.

It is a strong prime.

It is an emirp because it is prime and its reverse (32327077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77072323 - 2¹³ = 77064131 is a prime.

It is equal to p_4508509 and since 77072323 and 4508509 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (77072327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38536161 + 38536162.

It is an arithmetic number, because the mean of its divisors is an integer number (38536162).

Almost surely, 2^77072323 is an apocalyptic number.

77072323 is a deficient number, since it is larger than the sum of its proper divisors (1).

77072323 is an equidigital number, since it uses as much as digits as its factorization.

77072323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 31.

The square root of 77072323 is about 8779.0844055630. The cubic root of 77072323 is about 425.5652419081.

The spelling of 77072323 in words is "seventy-seven million, seventy-two thousand, three hundred twenty-three".