75920765 has 4 divisors (see below), whose sum is σ = 91104924. Its totient is φ = 60736608.

The previous prime is 75920743. The next prime is 75920777. The reversal of 75920765 is 56702957.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56702957 = 131 ⋅432847.

It can be written as a sum of positive squares in 2 ways, for example, as 20894041 + 55026724 = 4571^2 + 7418^2 .

It is a cyclic number.

It is not a de Polignac number, because 75920765 - 2¹² = 75916669 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, 7592072 + ... + 7592081.

It is an arithmetic number, because the mean of its divisors is an integer number (22776231).

Almost surely, 2^75920765 is an apocalyptic number.

It is an amenable number.

75920765 is a deficient number, since it is larger than the sum of its proper divisors (15184159).

75920765 is a wasteful number, since it uses less digits than its factorization.

75920765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15184158.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 75920765 is about 8713.2522630761. The cubic root of 75920765 is about 423.4351030805.

The spelling of 75920765 in words is "seventy-five million, nine hundred twenty thousand, seven hundred sixty-five".