764121075 has 24 divisors (see below), whose sum is σ = 1284065136. Its totient is φ = 400848000.

The previous prime is 764121073. The next prime is 764121079. The reversal of 764121075 is 570121467.

It is not a de Polignac number, because 764121075 - 2¹ = 764121073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764121073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78936 + ... + 88085.

It is an arithmetic number, because the mean of its divisors is an integer number (53502714).

Almost surely, 2^764121075 is an apocalyptic number.

764121075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

764121075 is a deficient number, since it is larger than the sum of its proper divisors (519944061).

764121075 is a wasteful number, since it uses less digits than its factorization.

764121075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167095 (or 167090 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 764121075 is about 27642.7400052889. The cubic root of 764121075 is about 914.2270339071.

The spelling of 764121075 in words is "seven hundred sixty-four million, one hundred twenty-one thousand, seventy-five".