66854552 has 32 divisors (see below), whose sum is σ = 128520000. Its totient is φ = 32592288.

The previous prime is 66854549. The next prime is 66854573. The reversal of 66854552 is 25545866.

It is a super-2 number, since 2×66854552² = 8939062246241408, which contains 22 as substring.

It is a congruent number.

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, 65099 + ... + 66117.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^66854552 is an apocalyptic number.

It is an amenable number.

66854552 is a deficient number, since it is larger than the sum of its proper divisors (61665448).

66854552 is a wasteful number, since it uses less digits than its factorization.

66854552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1219 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The square root of 66854552 is about 8176.4632941144. The cubic root of 66854552 is about 405.8606946019.

The spelling of 66854552 in words is "sixty-six million, eight hundred fifty-four thousand, five hundred fifty-two".