66751301 has 8 divisors (see below), whose sum is σ = 69147000. Its totient is φ = 64361920.

The previous prime is 66751261. The next prime is 66751303. The reversal of 66751301 is 10315766.

66751301 = T₁₁₉₅ + T₁₁₉₆ + ... + T₁₂₈₁.

It can be written as a sum of positive squares in 4 ways, for example, as 35402500 + 31348801 = 5950^2 + 5599^2 .

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 66751301 - 2¹⁴ = 66734917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66751303) 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, 33275 + ... + 35223.

It is an arithmetic number, because the mean of its divisors is an integer number (8643375).

Almost surely, 2^66751301 is an apocalyptic number.

It is an amenable number.

66751301 is a deficient number, since it is larger than the sum of its proper divisors (2395699).

66751301 is a wasteful number, since it uses less digits than its factorization.

66751301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 66751301 is about 8170.1469387031. The cubic root of 66751301 is about 405.6516481820.

The spelling of 66751301 in words is "sixty-six million, seven hundred fifty-one thousand, three hundred one".