77140859 has 2 divisors, whose sum is σ = 77140860. Its totient is φ = 77140858.

The previous prime is 77140853. The next prime is 77140897. The reversal of 77140859 is 95804177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77140859 - 2⁸ = 77140603 is a prime.

It is not a weakly prime, because it can be changed into another prime (77140853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38570429 + 38570430.

It is an arithmetic number, because the mean of its divisors is an integer number (38570430).

Almost surely, 2^77140859 is an apocalyptic number.

77140859 is a deficient number, since it is larger than the sum of its proper divisors (1).

77140859 is an equidigital number, since it uses as much as digits as its factorization.

77140859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 77140859 is about 8782.9869065142. The cubic root of 77140859 is about 425.6913481296.

The spelling of 77140859 in words is "seventy-seven million, one hundred forty thousand, eight hundred fifty-nine".