77052065 has 4 divisors (see below), whose sum is σ = 92462484. Its totient is φ = 61641648.

The previous prime is 77052037. The next prime is 77052067. The reversal of 77052065 is 56025077.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56025077 = 151 ⋅371027.

It can be written as a sum of positive squares in 2 ways, for example, as 8427409 + 68624656 = 2903^2 + 8284^2 .

It is a cyclic number.

It is not a de Polignac number, because 77052065 - 2¹² = 77047969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77052067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7705202 + ... + 7705211.

It is an arithmetic number, because the mean of its divisors is an integer number (23115621).

Almost surely, 2^77052065 is an apocalyptic number.

It is an amenable number.

77052065 is a deficient number, since it is larger than the sum of its proper divisors (15410419).

77052065 is a wasteful number, since it uses less digits than its factorization.

77052065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15410418.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 77052065 is about 8777.9305647744. The cubic root of 77052065 is about 425.5279528797.

The spelling of 77052065 in words is "seventy-seven million, fifty-two thousand, sixty-five".