66846572 has 12 divisors (see below), whose sum is σ = 125980176. Its totient is φ = 30852240.

The previous prime is 66846569. The next prime is 66846583. The reversal of 66846572 is 27564866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642704 + ... + 642807.

It is an arithmetic number, because the mean of its divisors is an integer number (10498348).

Almost surely, 2^66846572 is an apocalyptic number.

It is an amenable number.

66846572 is a deficient number, since it is larger than the sum of its proper divisors (59133604).

66846572 is a wasteful number, since it uses less digits than its factorization.

66846572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285528 (or 1285526 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 66846572 is about 8175.9752935047. The cubic root of 66846572 is about 405.8445456282.

The spelling of 66846572 in words is "sixty-six million, eight hundred forty-six thousand, five hundred seventy-two".