77275465 has 4 divisors (see below), whose sum is σ = 92730564. Its totient is φ = 61820368.

The previous prime is 77275453. The next prime is 77275483. The reversal of 77275465 is 56457277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56457277 = 59 ⋅956903.

It can be written as a sum of positive squares in 2 ways, for example, as 44876601 + 32398864 = 6699^2 + 5692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77275465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7727542 + ... + 7727551.

It is an arithmetic number, because the mean of its divisors is an integer number (23182641).

Almost surely, 2^77275465 is an apocalyptic number.

It is an amenable number.

77275465 is a deficient number, since it is larger than the sum of its proper divisors (15455099).

77275465 is a wasteful number, since it uses less digits than its factorization.

77275465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15455098.

The product of its digits is 411600, while the sum is 43.

The square root of 77275465 is about 8790.6464494939. The cubic root of 77275465 is about 425.9388058926.

The spelling of 77275465 in words is "seventy-seven million, two hundred seventy-five thousand, four hundred sixty-five".