667136522 has 16 divisors (see below), whose sum is σ = 1078939680. Its totient is φ = 307549872.

The previous prime is 667136513. The next prime is 667136527. The reversal of 667136522 is 225631766.

It is a super-2 number, since 2×667136522² = 890142277972512968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667136527) 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, 8429 + ... + 37487.

It is an arithmetic number, because the mean of its divisors is an integer number (67433730).

Almost surely, 2^667136522 is an apocalyptic number.

667136522 is a deficient number, since it is larger than the sum of its proper divisors (411803158).

667136522 is a wasteful number, since it uses less digits than its factorization.

667136522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29957.

The product of its digits is 90720, while the sum is 38.

The square root of 667136522 is about 25828.9860815325. The cubic root of 667136522 is about 873.7856447616.

The spelling of 667136522 in words is "six hundred sixty-seven million, one hundred thirty-six thousand, five hundred twenty-two".