66829628 has 18 divisors (see below), whose sum is σ = 122261664. Its totient is φ = 31960984.

The previous prime is 66829621. The next prime is 66829639. The reversal of 66829628 is 82692866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66829621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13676 + ... + 17907.

Almost surely, 2^66829628 is an apocalyptic number.

It is an amenable number.

66829628 is a deficient number, since it is larger than the sum of its proper divisors (55432036).

66829628 is a wasteful number, since it uses less digits than its factorization.

66829628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31633 (or 31608 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 66829628 is about 8174.9390211793. The cubic root of 66829628 is about 405.8102521165.

The spelling of 66829628 in words is "sixty-six million, eight hundred twenty-nine thousand, six hundred twenty-eight".