77085441 has 6 divisors (see below), whose sum is σ = 111345650. Its totient is φ = 51390288.

The previous prime is 77085439. The next prime is 77085511. The reversal of 77085441 is 14458077.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 32729841 = 6660^2 + 5721^2 .

It is not a de Polignac number, because 77085441 - 2¹ = 77085439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77085396 and 77085405.

It is not an unprimeable number, because it can be changed into a prime (77085401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4282516 + ... + 4282533.

Almost surely, 2^77085441 is an apocalyptic number.

It is an amenable number.

77085441 is a deficient number, since it is larger than the sum of its proper divisors (34260209).

77085441 is a wasteful number, since it uses less digits than its factorization.

77085441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8565055 (or 8565052 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 77085441 is about 8779.8314904103. The cubic root of 77085441 is about 425.5893848080.

The spelling of 77085441 in words is "seventy-seven million, eighty-five thousand, four hundred forty-one".