764070655 has 16 divisors (see below), whose sum is σ = 987592320. Its totient is φ = 565615008.

The previous prime is 764070653. The next prime is 764070667. The reversal of 764070655 is 556070467.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 764070655 - 2¹ = 764070653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764070653) 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 15 ways as a sum of consecutive naturals, for example, 89437 + ... + 97606.

It is an arithmetic number, because the mean of its divisors is an integer number (61724520).

Almost surely, 2^764070655 is an apocalyptic number.

764070655 is a deficient number, since it is larger than the sum of its proper divisors (223521665).

764070655 is a wasteful number, since it uses less digits than its factorization.

764070655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187110.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 764070655 is about 27641.8279967154. The cubic root of 764070655 is about 914.2069252522.

The spelling of 764070655 in words is "seven hundred sixty-four million, seventy thousand, six hundred fifty-five".