66051632 has 20 divisors (see below), whose sum is σ = 128247000. Its totient is φ = 32955648.

The previous prime is 66051611. The next prime is 66051637. The reversal of 66051632 is 23615066.

It is a junction number, because it is equal to n+sod(n) for n = 66051595 and 66051604.

It is not an unprimeable number, because it can be changed into a prime (66051637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3848 + ... + 12120.

It is an arithmetic number, because the mean of its divisors is an integer number (6412350).

Almost surely, 2^66051632 is an apocalyptic number.

It is an amenable number.

66051632 is a deficient number, since it is larger than the sum of its proper divisors (62195368).

66051632 is a wasteful number, since it uses less digits than its factorization.

66051632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780 (or 8774 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 66051632 is about 8127.2155133231. The cubic root of 66051632 is about 404.2293570710.

Adding to 66051632 its reverse (23615066), we get a palindrome (89666698).

The spelling of 66051632 in words is "sixty-six million, fifty-one thousand, six hundred thirty-two".