66671030 has 32 divisors (see below), whose sum is σ = 122791680. Its totient is φ = 26056800.

The previous prime is 66671021. The next prime is 66671039. The reversal of 66671030 is 3017666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66671021) and next prime (66671039).

It is a junction number, because it is equal to n+sod(n) for n = 66670984 and 66671002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66671039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100841 + ... + 101499.

It is an arithmetic number, because the mean of its divisors is an integer number (3837240).

Almost surely, 2^66671030 is an apocalyptic number.

66671030 is a deficient number, since it is larger than the sum of its proper divisors (56120650).

66671030 is a wasteful number, since it uses less digits than its factorization.

66671030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 66671030 is about 8165.2330034115. The cubic root of 66671030 is about 405.4889790701.

Adding to 66671030 its reverse (3017666), we get a palindrome (69688696).

The spelling of 66671030 in words is "sixty-six million, six hundred seventy-one thousand, thirty".