66051730 has 16 divisors (see below), whose sum is σ = 119102400. Its totient is φ = 26374192.

The previous prime is 66051721. The next prime is 66051751. The reversal of 66051730 is 3715066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (7443900).

Almost surely, 2^66051730 is an apocalyptic number.

66051730 is a deficient number, since it is larger than the sum of its proper divisors (53050670).

66051730 is a wasteful number, since it uses less digits than its factorization.

66051730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11633.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 66051730 is about 8127.2215424461. The cubic root of 66051730 is about 404.2295569876.

Adding to 66051730 its reverse (3715066), we get a palindrome (69766796).

The spelling of 66051730 in words is "sixty-six million, fifty-one thousand, seven hundred thirty".