66101739 has 8 divisors (see below), whose sum is σ = 96148032. Its totient is φ = 40061640.

The previous prime is 66101713. The next prime is 66101753. The reversal of 66101739 is 93710166.

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

It is not a de Polignac number, because 66101739 - 2²⁴ = 49324523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2003083 = 66101739 / (6 + 6 + 1 + 0 + 1 + 7 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (66101039) 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, 1001509 + ... + 1001574.

It is an arithmetic number, because the mean of its divisors is an integer number (12018504).

Almost surely, 2^66101739 is an apocalyptic number.

66101739 is a deficient number, since it is larger than the sum of its proper divisors (30046293).

66101739 is a wasteful number, since it uses less digits than its factorization.

66101739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003097.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 66101739 is about 8130.2975960293. The cubic root of 66101739 is about 404.3315478378.

The spelling of 66101739 in words is "sixty-six million, one hundred one thousand, seven hundred thirty-nine".