66241651 has 8 divisors (see below), whose sum is σ = 76771584. Its totient is φ = 55978440.

The previous prime is 66241631. The next prime is 66241687. The reversal of 66241651 is 15614266.

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

It is not a de Polignac number, because 66241651 - 2⁷ = 66241523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66241621) 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, 66145 + ... + 67138.

It is an arithmetic number, because the mean of its divisors is an integer number (9596448).

Almost surely, 2^66241651 is an apocalyptic number.

66241651 is a deficient number, since it is larger than the sum of its proper divisors (10529933).

66241651 is a wasteful number, since it uses less digits than its factorization.

66241651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133361.

The product of its digits is 8640, while the sum is 31.

The square root of 66241651 is about 8138.8974068973. The cubic root of 66241651 is about 404.6166183485.

The spelling of 66241651 in words is "sixty-six million, two hundred forty-one thousand, six hundred fifty-one".