66126634 has 32 divisors (see below), whose sum is σ = 121582080. Its totient is φ = 26327808.

The previous prime is 66126611. The next prime is 66126637. The reversal of 66126634 is 43662166.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 66126634.

It is not an unprimeable number, because it can be changed into a prime (66126637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17044 + ... + 20560.

It is an arithmetic number, because the mean of its divisors is an integer number (3799440).

Almost surely, 2^66126634 is an apocalyptic number.

66126634 is a deficient number, since it is larger than the sum of its proper divisors (55455446).

66126634 is a wasteful number, since it uses less digits than its factorization.

66126634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622.

The product of its digits is 31104, while the sum is 34.

The square root of 66126634 is about 8131.8284536751. The cubic root of 66126634 is about 404.3823007663.

The spelling of 66126634 in words is "sixty-six million, one hundred twenty-six thousand, six hundred thirty-four".