77068471 has 4 divisors (see below), whose sum is σ = 77209912. Its totient is φ = 76927032.

The previous prime is 77068451. The next prime is 77068483. The reversal of 77068471 is 17486077.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77068471 - 2⁹ = 77067959 is a prime.

It is a super-3 number, since 3×77068471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77068421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69900 + ... + 70993.

It is an arithmetic number, because the mean of its divisors is an integer number (19302478).

Almost surely, 2^77068471 is an apocalyptic number.

77068471 is a deficient number, since it is larger than the sum of its proper divisors (141441).

77068471 is a wasteful number, since it uses less digits than its factorization.

77068471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141440.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 77068471 is about 8778.8650177571. The cubic root of 77068471 is about 425.5581520105.

The spelling of 77068471 in words is "seventy-seven million, sixty-eight thousand, four hundred seventy-one".