775730 has 8 divisors (see below), whose sum is σ = 1396332. Its totient is φ = 310288.

The previous prime is 775729. The next prime is 775739. The reversal of 775730 is 37577.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 51529 = 851^2 + 227^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 775693 and 775702.

It is not an unprimeable number, because it can be changed into a prime (775739) 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, 38777 + ... + 38796.

2⁷⁷⁵⁷³⁰ is an apocalyptic number.

775730 is a deficient number, since it is larger than the sum of its proper divisors (620602).

775730 is a wasteful number, since it uses less digits than its factorization.

775730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77580.

The product of its (nonzero) digits is 5145, while the sum is 29.

The square root of 775730 is about 880.7553576334. The cubic root of 775730 is about 91.8833587965.

The spelling of 775730 in words is "seven hundred seventy-five thousand, seven hundred thirty".