77385085 has 8 divisors (see below), whose sum is σ = 92929536. Its totient is φ = 61863120.

The previous prime is 77385073. The next prime is 77385097. The reversal of 77385085 is 58058377.

It is an interprime number because it is at equal distance from previous prime (77385073) and next prime (77385097).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-77385085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220 + ... + 12850.

It is an arithmetic number, because the mean of its divisors is an integer number (11616192).

Almost surely, 2^77385085 is an apocalyptic number.

It is an amenable number.

77385085 is a deficient number, since it is larger than the sum of its proper divisors (15544451).

77385085 is a wasteful number, since it uses less digits than its factorization.

77385085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 77385085 is about 8796.8792761979. The cubic root of 77385085 is about 426.1401175295.

It can be divided in two parts, 773 and 85085, that added together give a palindrome (85858).

The spelling of 77385085 in words is "seventy-seven million, three hundred eighty-five thousand, eighty-five".