764305243 has 8 divisors (see below), whose sum is σ = 824323248. Its totient is φ = 704462304.

The previous prime is 764305183. The next prime is 764305259. The reversal of 764305243 is 342503467.

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

It is not a de Polignac number, because 764305243 - 2²¹ = 762208091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764305199 and 764305208.

It is not an unprimeable number, because it can be changed into a prime (764305543) 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 7 ways as a sum of consecutive naturals, for example, 34621 + ... + 52222.

It is an arithmetic number, because the mean of its divisors is an integer number (103040406).

Almost surely, 2^764305243 is an apocalyptic number.

764305243 is a deficient number, since it is larger than the sum of its proper divisors (60018005).

764305243 is a wasteful number, since it uses less digits than its factorization.

764305243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87533.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 764305243 is about 27646.0710228416. The cubic root of 764305243 is about 914.3004768229.

The spelling of 764305243 in words is "seven hundred sixty-four million, three hundred five thousand, two hundred forty-three".