764420447 has 8 divisors (see below), whose sum is σ = 873802752. Its totient is φ = 655083000.

The previous prime is 764420411. The next prime is 764420467. The reversal of 764420447 is 744024467.

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 764420447 - 2⁶ = 764420383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 764420447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764420467) 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, 42422 + ... + 57692.

It is an arithmetic number, because the mean of its divisors is an integer number (109225344).

Almost surely, 2^764420447 is an apocalyptic number.

764420447 is a deficient number, since it is larger than the sum of its proper divisors (109382305).

764420447 is a wasteful number, since it uses less digits than its factorization.

764420447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22429.

The product of its (nonzero) digits is 150528, while the sum is 38.

The square root of 764420447 is about 27648.1544953727. The cubic root of 764420447 is about 914.3464121266.

The spelling of 764420447 in words is "seven hundred sixty-four million, four hundred twenty thousand, four hundred forty-seven".