66671652 has 24 divisors (see below), whose sum is σ = 158205600. Its totient is φ = 21846976.

The previous prime is 66671651. The next prime is 66671653. The reversal of 66671652 is 25617666.

66671652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66671651) and next prime (66671653).

It is a self number, because there is not a number n which added to its sum of digits gives 66671652.

It is not an unprimeable number, because it can be changed into a prime (66671651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46377 + ... + 47792.

It is an arithmetic number, because the mean of its divisors is an integer number (6591900).

Almost surely, 2^66671652 is an apocalyptic number.

It is an amenable number.

66671652 is an abundant number, since it is smaller than the sum of its proper divisors (91533948).

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

66671652 is a wasteful number, since it uses less digits than its factorization.

66671652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94235 (or 94233 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 66671652 is about 8165.2710916417. The cubic root of 66671652 is about 405.4902400544.

The spelling of 66671652 in words is "sixty-six million, six hundred seventy-one thousand, six hundred fifty-two".