764147321 has 8 divisors (see below), whose sum is σ = 875559360. Its totient is φ = 653297328.

The previous prime is 764147311. The next prime is 764147323. The reversal of 764147321 is 123741467.

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

It is a cyclic number.

It is not a de Polignac number, because 764147321 - 2⁶ = 764147257 is a prime.

It is a super-2 number, since 2×764147321² = 1167842256382954082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764147323) 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, 137591 + ... + 143036.

It is an arithmetic number, because the mean of its divisors is an integer number (109444920).

Almost surely, 2^764147321 is an apocalyptic number.

It is an amenable number.

764147321 is a deficient number, since it is larger than the sum of its proper divisors (111412039).

764147321 is a wasteful number, since it uses less digits than its factorization.

764147321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281023.

The product of its digits is 28224, while the sum is 35.

The square root of 764147321 is about 27643.2147370743. The cubic root of 764147321 is about 914.2375010651.

Adding to 764147321 its reverse (123741467), we get a palindrome (887888788).

The spelling of 764147321 in words is "seven hundred sixty-four million, one hundred forty-seven thousand, three hundred twenty-one".