66732130 has 16 divisors (see below), whose sum is σ = 122912064. Its totient is φ = 26071920.

The previous prime is 66732121. The next prime is 66732139. The reversal of 66732130 is 3123766.

It is an interprime number because it is at equal distance from previous prime (66732121) and next prime (66732139).

It is not an unprimeable number, because it can be changed into a prime (66732139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77166 + ... + 78025.

It is an arithmetic number, because the mean of its divisors is an integer number (7682004).

Almost surely, 2^66732130 is an apocalyptic number.

66732130 is a deficient number, since it is larger than the sum of its proper divisors (56179934).

66732130 is a wasteful number, since it uses less digits than its factorization.

66732130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155241.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 66732130 is about 8168.9736197395. The cubic root of 66732130 is about 405.6128100259.

Adding to 66732130 its reverse (3123766), we get a palindrome (69855896).

The spelling of 66732130 in words is "sixty-six million, seven hundred thirty-two thousand, one hundred thirty".