76745765 has 4 divisors (see below), whose sum is σ = 92094924. Its totient is φ = 61396608.

The previous prime is 76745729. The next prime is 76745789. The reversal of 76745765 is 56754767.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41770369 + 34975396 = 6463^2 + 5914^2 .

It is a cyclic number.

It is not a de Polignac number, because 76745765 - 2¹² = 76741669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7674572 + ... + 7674581.

It is an arithmetic number, because the mean of its divisors is an integer number (23023731).

Almost surely, 2^76745765 is an apocalyptic number.

It is an amenable number.

76745765 is a deficient number, since it is larger than the sum of its proper divisors (15349159).

76745765 is a wasteful number, since it uses less digits than its factorization.

76745765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15349158.

The product of its digits is 1234800, while the sum is 47.

The square root of 76745765 is about 8760.4660264166. The cubic root of 76745765 is about 424.9633463199.

The spelling of 76745765 in words is "seventy-six million, seven hundred forty-five thousand, seven hundred sixty-five".