66732741 has 20 divisors (see below), whose sum is σ = 103128300. Its totient is φ = 42952896.

The previous prime is 66732733. The next prime is 66732751. The reversal of 66732741 is 14723766.

It can be written as a sum of positive squares in 2 ways, for example, as 39012516 + 27720225 = 6246^2 + 5265^2 .

It is not a de Polignac number, because 66732741 - 2³ = 66732733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66732696 and 66732705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66732751) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11856 + ... + 16553.

It is an arithmetic number, because the mean of its divisors is an integer number (5156415).

Almost surely, 2^66732741 is an apocalyptic number.

It is an amenable number.

66732741 is a deficient number, since it is larger than the sum of its proper divisors (36395559).

66732741 is a wasteful number, since it uses less digits than its factorization.

66732741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28450 (or 28441 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 66732741 is about 8169.0110172529. The cubic root of 66732741 is about 405.6140479536.

The spelling of 66732741 in words is "sixty-six million, seven hundred thirty-two thousand, seven hundred forty-one".