764308646 has 8 divisors (see below), whose sum is σ = 1146582840. Its totient is φ = 382114368.

The previous prime is 764308631. The next prime is 764308673. The reversal of 764308646 is 646803467.

It is a happy number.

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 = 764308597 and 764308606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19670 + ... + 43766.

It is an arithmetic number, because the mean of its divisors is an integer number (143322855).

Almost surely, 2^764308646 is an apocalyptic number.

764308646 is a deficient number, since it is larger than the sum of its proper divisors (382274194).

764308646 is a wasteful number, since it uses less digits than its factorization.

764308646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39958.

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 764308646 is about 27646.1325685890. The cubic root of 764308646 is about 914.3018337676.

The spelling of 764308646 in words is "seven hundred sixty-four million, three hundred eight thousand, six hundred forty-six".