78495377 has 2 divisors, whose sum is σ = 78495378. Its totient is φ = 78495376.

The previous prime is 78495371. The next prime is 78495413. The reversal of 78495377 is 77359487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40844881 + 37650496 = 6391^2 + 6136^2 .

It is a cyclic number.

It is not a de Polignac number, because 78495377 - 2⁸ = 78495121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78495371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39247688 + 39247689.

It is an arithmetic number, because the mean of its divisors is an integer number (39247689).

Almost surely, 2^78495377 is an apocalyptic number.

It is an amenable number.

78495377 is a deficient number, since it is larger than the sum of its proper divisors (1).

78495377 is an equidigital number, since it uses as much as digits as its factorization.

78495377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 50.

The square root of 78495377 is about 8859.7616785103. The cubic root of 78495377 is about 428.1684800496.

The spelling of 78495377 in words is "seventy-eight million, four hundred ninety-five thousand, three hundred seventy-seven".