66145846 has 16 divisors (see below), whose sum is σ = 107168544. Its totient is φ = 30438144.

The previous prime is 66145841. The next prime is 66145939. The reversal of 66145846 is 64854166.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66145799 and 66145808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66145841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5575 + ... + 12781.

It is an arithmetic number, because the mean of its divisors is an integer number (6698034).

Almost surely, 2^66145846 is an apocalyptic number.

66145846 is a deficient number, since it is larger than the sum of its proper divisors (41022698).

66145846 is a wasteful number, since it uses less digits than its factorization.

66145846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7575.

The product of its digits is 138240, while the sum is 40.

The square root of 66145846 is about 8133.0096520292. The cubic root of 66145846 is about 404.4214591711.

The spelling of 66145846 in words is "sixty-six million, one hundred forty-five thousand, eight hundred forty-six".