76925609 has 2 divisors, whose sum is σ = 76925610. Its totient is φ = 76925608.

The previous prime is 76925587. The next prime is 76925633. The reversal of 76925609 is 90652967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42445225 + 34480384 = 6515^2 + 5872^2 .

It is a cyclic number.

It is not a de Polignac number, because 76925609 - 2¹² = 76921513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 76925609.

It is not a weakly prime, because it can be changed into another prime (76925669) 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 as a sum of consecutive naturals, namely, 38462804 + 38462805.

It is an arithmetic number, because the mean of its divisors is an integer number (38462805).

Almost surely, 2^76925609 is an apocalyptic number.

It is an amenable number.

76925609 is a deficient number, since it is larger than the sum of its proper divisors (1).

76925609 is an equidigital number, since it uses as much as digits as its factorization.

76925609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 76925609 is about 8770.7245424765. The cubic root of 76925609 is about 425.2950366595.

The spelling of 76925609 in words is "seventy-six million, nine hundred twenty-five thousand, six hundred nine".