66948804 has 36 divisors (see below), whose sum is σ = 182250796. Its totient is φ = 20599488.

The previous prime is 66948793. The next prime is 66948841. The reversal of 66948804 is 40884966.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 44195904 + 22752900 = 6648^2 + 4770^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 66948804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71059 + ... + 71994.

Almost surely, 2^66948804 is an apocalyptic number.

It is an amenable number.

66948804 is an abundant number, since it is smaller than the sum of its proper divisors (115301992).

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

66948804 is a wasteful number, since it uses less digits than its factorization.

66948804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143076 (or 143071 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 66948804 is about 8182.2248808011. The cubic root of 66948804 is about 406.0513334269.

The spelling of 66948804 in words is "sixty-six million, nine hundred forty-eight thousand, eight hundred four".