76942505 has 4 divisors (see below), whose sum is σ = 92331012. Its totient is φ = 61554000.

The previous prime is 76942501. The next prime is 76942513. The reversal of 76942505 is 50524967.

It is a happy number.

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 43983424 + 32959081 = 6632^2 + 5741^2 .

It is not a de Polignac number, because 76942505 - 2² = 76942501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76942501) by changing a digit.

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, 7694246 + ... + 7694255.

It is an arithmetic number, because the mean of its divisors is an integer number (23082753).

Almost surely, 2^76942505 is an apocalyptic number.

It is an amenable number.

76942505 is a deficient number, since it is larger than the sum of its proper divisors (15388507).

76942505 is a wasteful number, since it uses less digits than its factorization.

76942505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15388506.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 76942505 is about 8771.6876939389. The cubic root of 76942505 is about 425.3261717565.

The spelling of 76942505 in words is "seventy-six million, nine hundred forty-two thousand, five hundred five".