77708071 has 12 divisors (see below), whose sum is σ = 95713488. Its totient is φ = 62688192.

The previous prime is 77708069. The next prime is 77708077. The reversal of 77708071 is 17080777.

It is not a de Polignac number, because 77708071 - 2¹ = 77708069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77708071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77708077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45811 + ... + 47476.

It is an arithmetic number, because the mean of its divisors is an integer number (7976124).

Almost surely, 2^77708071 is an apocalyptic number.

77708071 is a deficient number, since it is larger than the sum of its proper divisors (18005417).

77708071 is a wasteful number, since it uses less digits than its factorization.

77708071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93318 (or 93311 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 37.

The square root of 77708071 is about 8815.2181481799. The cubic root of 77708071 is about 426.7321620512.

The spelling of 77708071 in words is "seventy-seven million, seven hundred eight thousand, seventy-one".