77342071 has 2 divisors, whose sum is σ = 77342072. Its totient is φ = 77342070.

The previous prime is 77342051. The next prime is 77342107. The reversal of 77342071 is 17024377.

Together with next prime (77342107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (17024377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77342071 - 2¹¹ = 77340023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77342011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38671035 + 38671036.

It is an arithmetic number, because the mean of its divisors is an integer number (38671036).

Almost surely, 2^77342071 is an apocalyptic number.

77342071 is a deficient number, since it is larger than the sum of its proper divisors (1).

77342071 is an equidigital number, since it uses as much as digits as its factorization.

77342071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 77342071 is about 8794.4340920835. The cubic root of 77342071 is about 426.0611471514.

The spelling of 77342071 in words is "seventy-seven million, three hundred forty-two thousand, seventy-one".