66051746 has 8 divisors (see below), whose sum is σ = 99650844. Its totient is φ = 32834800.

The previous prime is 66051721. The next prime is 66051751. The reversal of 66051746 is 64715066.

It can be written as a sum of positive squares in 2 ways, for example, as 61011721 + 5040025 = 7811^2 + 2245^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95105 + ... + 95796.

Almost surely, 2^66051746 is an apocalyptic number.

66051746 is a deficient number, since it is larger than the sum of its proper divisors (33599098).

66051746 is a wasteful number, since it uses less digits than its factorization.

66051746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191076.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66051746 is about 8127.2225267923. Note that the first 3 decimals coincide. The cubic root of 66051746 is about 404.2295896270.

The spelling of 66051746 in words is "sixty-six million, fifty-one thousand, seven hundred forty-six".