66020104 has 16 divisors (see below), whose sum is σ = 123896700. Its totient is φ = 32980992.

The previous prime is 66020081. The next prime is 66020147. The reversal of 66020104 is 40102066.

It can be written as a sum of positive squares in 2 ways, for example, as 65772100 + 248004 = 8110^2 + 498^2 .

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, 8344 + ... + 14200.

Almost surely, 2^66020104 is an apocalyptic number.

It is an amenable number.

66020104 is a deficient number, since it is larger than the sum of its proper divisors (57876596).

66020104 is a wasteful number, since it uses less digits than its factorization.

66020104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272 (or 7268 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 66020104 is about 8125.2756260942. The cubic root of 66020104 is about 404.1650307701.

The spelling of 66020104 in words is "sixty-six million, twenty thousand, one hundred four".