66101651 has 8 divisors (see below), whose sum is σ = 82412544. Its totient is φ = 51507720.

The previous prime is 66101617. The next prime is 66101663. The reversal of 66101651 is 15610166.

66101651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66101651 - 2¹⁰ = 66100627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66101651.

It is not an unprimeable number, because it can be changed into a prime (66101671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429155 + ... + 429308.

It is an arithmetic number, because the mean of its divisors is an integer number (10301568).

Almost surely, 2^66101651 is an apocalyptic number.

66101651 is a deficient number, since it is larger than the sum of its proper divisors (16310893).

66101651 is a wasteful number, since it uses less digits than its factorization.

66101651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858481.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 66101651 is about 8130.2921841715. The cubic root of 66101651 is about 404.3313684114.

It can be divided in two parts, 6610165 and 1, that added together give a palindrome (6610166).

The spelling of 66101651 in words is "sixty-six million, one hundred one thousand, six hundred fifty-one".