76427765 has 8 divisors (see below), whose sum is σ = 91773528. Its totient is φ = 61102080.

The previous prime is 76427761. The next prime is 76427777. The reversal of 76427765 is 56772467.

It can be written as a sum of positive squares in 4 ways, for example, as 232324 + 76195441 = 482^2 + 8729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 76427765 - 2² = 76427761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76427761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5285 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (11471691).

Almost surely, 2^76427765 is an apocalyptic number.

It is an amenable number.

76427765 is a deficient number, since it is larger than the sum of its proper divisors (15345763).

76427765 is a wasteful number, since it uses less digits than its factorization.

76427765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039.

The product of its digits is 493920, while the sum is 44.

The square root of 76427765 is about 8742.2974669134. The cubic root of 76427765 is about 424.3755813105.

The spelling of 76427765 in words is "seventy-six million, four hundred twenty-seven thousand, seven hundred sixty-five".