66469612 has 24 divisors (see below), whose sum is σ = 130329360. Its totient is φ = 29396160.

The previous prime is 66469603. The next prime is 66469621. The reversal of 66469612 is 21696466.

It is an interprime number because it is at equal distance from previous prime (66469603) and next prime (66469621).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18787 + ... + 22042.

It is an arithmetic number, because the mean of its divisors is an integer number (5430390).

Almost surely, 2^66469612 is an apocalyptic number.

It is an amenable number.

66469612 is a deficient number, since it is larger than the sum of its proper divisors (63859748).

66469612 is a wasteful number, since it uses less digits than its factorization.

66469612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40881 (or 40879 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 66469612 is about 8152.8897944226. The cubic root of 66469612 is about 405.0802300030.

It can be divided in two parts, 66469 and 612, that added together give a square (67081 = 259²).

The spelling of 66469612 in words is "sixty-six million, four hundred sixty-nine thousand, six hundred twelve".