66553001 has 8 divisors (see below), whose sum is σ = 69997824. Its totient is φ = 63189360.

The previous prime is 66552989. The next prime is 66553027. The reversal of 66553001 is 10035566.

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

It is a cyclic number.

It is not a de Polignac number, because 66553001 - 2²² = 62358697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66553051) 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, 18611 + ... + 21896.

It is an arithmetic number, because the mean of its divisors is an integer number (8749728).

Almost surely, 2^66553001 is an apocalyptic number.

It is an amenable number.

66553001 is a deficient number, since it is larger than the sum of its proper divisors (3444823).

66553001 is a wasteful number, since it uses less digits than its factorization.

66553001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40591.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 66553001 is about 8158.0022677124. The cubic root of 66553001 is about 405.2495560969.

Adding to 66553001 its reverse (10035566), we get a palindrome (76588567).

The spelling of 66553001 in words is "sixty-six million, five hundred fifty-three thousand, one".