66652738 has 8 divisors (see below), whose sum is σ = 100120320. Its totient is φ = 33279300.

The previous prime is 66652673. The next prime is 66652753. The reversal of 66652738 is 83725666.

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

It is a junction number, because it is equal to n+sod(n) for n = 66652694 and 66652703.

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, 21738 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (12515040).

Almost surely, 2^66652738 is an apocalyptic number.

66652738 is a deficient number, since it is larger than the sum of its proper divisors (33467582).

66652738 is a wasteful number, since it uses less digits than its factorization.

66652738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47072.

The product of its digits is 362880, while the sum is 43.

The square root of 66652738 is about 8164.1128115675. The cubic root of 66652738 is about 405.4518920833.

The spelling of 66652738 in words is "sixty-six million, six hundred fifty-two thousand, seven hundred thirty-eight".