764445047 has 4 divisors (see below), whose sum is σ = 765450336. Its totient is φ = 763439760.

The previous prime is 764445037. The next prime is 764445139. The reversal of 764445047 is 740544467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740544467 = 13 ⋅56964959.

It is a cyclic number.

It is not a de Polignac number, because 764445047 - 2⁶ = 764444983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764444995 and 764445013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764445037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501503 + ... + 503024.

It is an arithmetic number, because the mean of its divisors is an integer number (191362584).

Almost surely, 2^764445047 is an apocalyptic number.

764445047 is a deficient number, since it is larger than the sum of its proper divisors (1005289).

764445047 is a wasteful number, since it uses less digits than its factorization.

764445047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005288.

The product of its (nonzero) digits is 376320, while the sum is 41.

The square root of 764445047 is about 27648.5993677799. The cubic root of 764445047 is about 914.3562202893.

The spelling of 764445047 in words is "seven hundred sixty-four million, four hundred forty-five thousand, forty-seven".