764213217 has 8 divisors (see below), whose sum is σ = 1021684224. Its totient is φ = 508108848.

The previous prime is 764213179. The next prime is 764213251. The reversal of 764213217 is 712312467.

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

It is not a de Polignac number, because 764213217 - 2¹⁰ = 764212193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764213717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340353 + ... + 342590.

It is an arithmetic number, because the mean of its divisors is an integer number (127710528).

Almost surely, 2^764213217 is an apocalyptic number.

It is an amenable number.

764213217 is a deficient number, since it is larger than the sum of its proper divisors (257471007).

764213217 is a wasteful number, since it uses less digits than its factorization.

764213217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683319.

The product of its digits is 14112, while the sum is 33.

The square root of 764213217 is about 27644.4066132735. The cubic root of 764213217 is about 914.2637799693.

The spelling of 764213217 in words is "seven hundred sixty-four million, two hundred thirteen thousand, two hundred seventeen".