77348853 has 12 divisors (see below), whose sum is σ = 112004620. Its totient is φ = 51437376.

The previous prime is 77348851. The next prime is 77348857. The reversal of 77348853 is 35884377.

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 49660209 = 5262^2 + 7047^2 .

It is not a de Polignac number, because 77348853 - 2¹ = 77348851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77348799 and 77348808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77348851) 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 11 ways as a sum of consecutive naturals, for example, 6826 + ... + 14187.

Almost surely, 2^77348853 is an apocalyptic number.

It is an amenable number.

77348853 is a deficient number, since it is larger than the sum of its proper divisors (34655767).

77348853 is a wasteful number, since it uses less digits than its factorization.

77348853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21428 (or 21425 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 77348853 is about 8794.8196684184. The cubic root of 77348853 is about 426.0736003230.

The spelling of 77348853 in words is "seventy-seven million, three hundred forty-eight thousand, eight hundred fifty-three".