765420075 has 72 divisors (see below), whose sum is σ = 1572899328. Its totient is φ = 348546240.

The previous prime is 765420049. The next prime is 765420083. The reversal of 765420075 is 570024567.

765420075 = T₃₁₆ + T₃₁₇ + ... + T₁₆₆₅.

It is not a de Polignac number, because 765420075 - 2⁵ = 765420043 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 482734 + ... + 484316.

It is an arithmetic number, because the mean of its divisors is an integer number (21845824).

Almost surely, 2^765420075 is an apocalyptic number.

765420075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

765420075 is an abundant number, since it is smaller than the sum of its proper divisors (807479253).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

765420075 is a wasteful number, since it uses less digits than its factorization.

765420075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 765420075 is about 27666.2262515147. The cubic root of 765420075 is about 914.7448002800.

The spelling of 765420075 in words is "seven hundred sixty-five million, four hundred twenty thousand, seventy-five".