66783046 has 12 divisors (see below), whose sum is σ = 110109636. Its totient is φ = 30355820.

The previous prime is 66783029. The next prime is 66783049. The reversal of 66783046 is 64038766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66783049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137740 + ... + 138223.

It is an arithmetic number, because the mean of its divisors is an integer number (9175803).

Almost surely, 2^66783046 is an apocalyptic number.

66783046 is a deficient number, since it is larger than the sum of its proper divisors (43326590).

66783046 is a wasteful number, since it uses less digits than its factorization.

66783046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275987 (or 275976 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66783046 is about 8172.0894512970. The cubic root of 66783046 is about 405.7159434120.

The spelling of 66783046 in words is "sixty-six million, seven hundred eighty-three thousand, forty-six".