66424552 has 16 divisors (see below), whose sum is σ = 129961440. Its totient is φ = 31768176.

The previous prime is 66424541. The next prime is 66424571. The reversal of 66424552 is 25542466.

It is a super-2 number, since 2×66424552² = 8824442216801408, which contains 22 as substring.

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, 180318 + ... + 180685.

It is an arithmetic number, because the mean of its divisors is an integer number (8122590).

Almost surely, 2^66424552 is an apocalyptic number.

It is an amenable number.

66424552 is a deficient number, since it is larger than the sum of its proper divisors (63536888).

66424552 is a wasteful number, since it uses less digits than its factorization.

66424552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361032 (or 361028 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 66424552 is about 8150.1258885983. The cubic root of 66424552 is about 404.9886741740.

The spelling of 66424552 in words is "sixty-six million, four hundred twenty-four thousand, five hundred fifty-two".