66138962 has 8 divisors (see below), whose sum is σ = 104430000. Its totient is φ = 31328964.

The previous prime is 66138931. The next prime is 66138971. The reversal of 66138962 is 26983166.

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, 870212 + ... + 870287.

It is an arithmetic number, because the mean of its divisors is an integer number (13053750).

Almost surely, 2^66138962 is an apocalyptic number.

66138962 is a deficient number, since it is larger than the sum of its proper divisors (38291038).

66138962 is a wasteful number, since it uses less digits than its factorization.

66138962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740520.

The product of its digits is 93312, while the sum is 41.

The square root of 66138962 is about 8132.5864274534. The cubic root of 66138962 is about 404.4074288926.

The spelling of 66138962 in words is "sixty-six million, one hundred thirty-eight thousand, nine hundred sixty-two".