669004534 has 16 divisors (see below), whose sum is σ = 1097562960. Its totient is φ = 303307360.

The previous prime is 669004517. The next prime is 669004537. The reversal of 669004534 is 435400966.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 669004493 and 669004502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669004537) 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, 30529 + ... + 47644.

It is an arithmetic number, because the mean of its divisors is an integer number (68597685).

Almost surely, 2^669004534 is an apocalyptic number.

669004534 is a deficient number, since it is larger than the sum of its proper divisors (428558426).

669004534 is a wasteful number, since it uses less digits than its factorization.

669004534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78575.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 669004534 is about 25865.1219598903. The cubic root of 669004534 is about 874.6004310067.

The spelling of 669004534 in words is "six hundred sixty-nine million, four thousand, five hundred thirty-four".