78077323 has 2 divisors, whose sum is σ = 78077324. Its totient is φ = 78077322.

The previous prime is 78077317. The next prime is 78077381. The reversal of 78077323 is 32377087.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78077323 - 2⁵ = 78077291 is a prime.

It is not a weakly prime, because it can be changed into another prime (78077303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39038661 + 39038662.

It is an arithmetic number, because the mean of its divisors is an integer number (39038662).

Almost surely, 2^78077323 is an apocalyptic number.

78077323 is a deficient number, since it is larger than the sum of its proper divisors (1).

78077323 is an equidigital number, since it uses as much as digits as its factorization.

78077323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 78077323 is about 8836.1373348313. The cubic root of 78077323 is about 427.4070073485.

It can be divided in two parts, 78077 and 323, that added together give a square (78400 = 280²).

The spelling of 78077323 in words is "seventy-eight million, seventy-seven thousand, three hundred twenty-three".