66030547 has 12 divisors (see below), whose sum is σ = 72926560. Its totient is φ = 59740560.

The previous prime is 66030509. The next prime is 66030557. The reversal of 66030547 is 74503066.

It is not a de Polignac number, because 66030547 - 2¹⁵ = 65997779 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66030557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26518 + ... + 28900.

Almost surely, 2^66030547 is an apocalyptic number.

66030547 is a deficient number, since it is larger than the sum of its proper divisors (6896013).

66030547 is a wasteful number, since it uses less digits than its factorization.

66030547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 66030547 is about 8125.9182250377. The cubic root of 66030547 is about 404.1863397989.

The spelling of 66030547 in words is "sixty-six million, thirty thousand, five hundred forty-seven".