667609532 has 12 divisors (see below), whose sum is σ = 1175485416. Its totient is φ = 331756560.

The previous prime is 667609531. The next prime is 667609543. The reversal of 667609532 is 235906766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667609531) 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, 511319 + ... + 512622.

It is an arithmetic number, because the mean of its divisors is an integer number (97957118).

Almost surely, 2^667609532 is an apocalyptic number.

It is an amenable number.

667609532 is a deficient number, since it is larger than the sum of its proper divisors (507875884).

667609532 is a wasteful number, since it uses less digits than its factorization.

667609532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024108 (or 1024106 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 667609532 is about 25838.1410322028. The cubic root of 667609532 is about 873.9921051046.

The spelling of 667609532 in words is "six hundred sixty-seven million, six hundred nine thousand, five hundred thirty-two".