66627742 has 8 divisors (see below), whose sum is σ = 103165632. Its totient is φ = 32239200.

The previous prime is 66627739. The next prime is 66627751. The reversal of 66627742 is 24772666.

It is a happy number.

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 = 66627695 and 66627704.

It is a congruent number.

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, 537259 + ... + 537382.

It is an arithmetic number, because the mean of its divisors is an integer number (12895704).

Almost surely, 2^66627742 is an apocalyptic number.

66627742 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

66627742 is a deficient number, since it is larger than the sum of its proper divisors (36537890).

66627742 is a wasteful number, since it uses less digits than its factorization.

66627742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074674.

The product of its digits is 169344, while the sum is 40.

The square root of 66627742 is about 8162.5818219482. The cubic root of 66627742 is about 405.4012017793.

The spelling of 66627742 in words is "sixty-six million, six hundred twenty-seven thousand, seven hundred forty-two".