66014749 has 4 divisors (see below), whose sum is σ = 67097020. Its totient is φ = 64932480.

The previous prime is 66014677. The next prime is 66014777. The reversal of 66014749 is 94741066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24502500 + 41512249 = 4950^2 + 6443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66014749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66014789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541044 + ... + 541165.

It is an arithmetic number, because the mean of its divisors is an integer number (16774255).

Almost surely, 2^66014749 is an apocalyptic number.

It is an amenable number.

66014749 is a deficient number, since it is larger than the sum of its proper divisors (1082271).

66014749 is a wasteful number, since it uses less digits than its factorization.

66014749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082270.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66014749 is about 8124.9460921289. The cubic root of 66014749 is about 404.1541029762.

The spelling of 66014749 in words is "sixty-six million, fourteen thousand, seven hundred forty-nine".