66123662 has 16 divisors (see below), whose sum is σ = 111128112. Its totient is φ = 29243520.

The previous prime is 66123653. The next prime is 66123671. The reversal of 66123662 is 26632166.

It is an interprime number because it is at equal distance from previous prime (66123653) and next prime (66123671).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39803 + ... + 41430.

It is an arithmetic number, because the mean of its divisors is an integer number (6945507).

Almost surely, 2^66123662 is an apocalyptic number.

66123662 is a deficient number, since it is larger than the sum of its proper divisors (45004450).

66123662 is a wasteful number, since it uses less digits than its factorization.

66123662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81283.

The product of its digits is 15552, while the sum is 32.

The square root of 66123662 is about 8131.6457128923. The cubic root of 66123662 is about 404.3762424802.

The spelling of 66123662 in words is "sixty-six million, one hundred twenty-three thousand, six hundred sixty-two".