66926420 has 24 divisors (see below), whose sum is σ = 153322848. Its totient is φ = 24336800.

The previous prime is 66926407. The next prime is 66926429. The reversal of 66926420 is 2462966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66926429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151886 + ... + 152325.

It is an arithmetic number, because the mean of its divisors is an integer number (6388452).

Almost surely, 2^66926420 is an apocalyptic number.

It is an amenable number.

66926420 is an abundant number, since it is smaller than the sum of its proper divisors (86396428).

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

66926420 is a wasteful number, since it uses less digits than its factorization.

66926420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304231 (or 304229 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 66926420 is about 8180.8569233302. The cubic root of 66926420 is about 406.0060746339.

The spelling of 66926420 in words is "sixty-six million, nine hundred twenty-six thousand, four hundred twenty".