77693085 has 12 divisors (see below), whose sum is σ = 134668092. Its totient is φ = 41436288.

The previous prime is 77693053. The next prime is 77693107. The reversal of 77693085 is 58039677.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13003236 + 64689849 = 3606^2 + 8043^2 .

It is not a de Polignac number, because 77693085 - 2⁵ = 77693053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1726513 = 77693085 / (7 + 7 + 6 + 9 + 3 + 0 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 77693085.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 863212 + ... + 863301.

It is an arithmetic number, because the mean of its divisors is an integer number (11222341).

Almost surely, 2^77693085 is an apocalyptic number.

It is an amenable number.

77693085 is a deficient number, since it is larger than the sum of its proper divisors (56975007).

77693085 is a wasteful number, since it uses less digits than its factorization.

77693085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726524 (or 1726521 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 77693085 is about 8814.3680998697. The cubic root of 77693085 is about 426.7047285245.

The spelling of 77693085 in words is "seventy-seven million, six hundred ninety-three thousand, eighty-five".