66159952 has 20 divisors (see below), whose sum is σ = 132320896. Its totient is φ = 32012640.

The previous prime is 66159943. The next prime is 66159967. The reversal of 66159952 is 25995166.

66159952 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66159899 and 66159908.

It is a congruent number.

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, 66198 + ... + 67189.

Almost surely, 2^66159952 is an apocalyptic number.

66159952 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66159952 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66159952 is a wasteful number, since it uses less digits than its factorization.

66159952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133426 (or 133420 counting only the distinct ones).

The product of its digits is 145800, while the sum is 43.

The square root of 66159952 is about 8133.8768124431. The cubic root of 66159952 is about 404.4502055650.

The spelling of 66159952 in words is "sixty-six million, one hundred fifty-nine thousand, nine hundred fifty-two".