66836414 has 16 divisors (see below), whose sum is σ = 106807680. Its totient is φ = 31276440.

The previous prime is 66836411. The next prime is 66836443. The reversal of 66836414 is 41463866.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66836411) 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, 7442 + ... + 13749.

It is an arithmetic number, because the mean of its divisors is an integer number (6675480).

Almost surely, 2^66836414 is an apocalyptic number.

66836414 is a deficient number, since it is larger than the sum of its proper divisors (39971266).

66836414 is a wasteful number, since it uses less digits than its factorization.

66836414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21295.

The product of its digits is 82944, while the sum is 38.

The square root of 66836414 is about 8175.3540596111. The cubic root of 66836414 is about 405.8239872180.

The spelling of 66836414 in words is "sixty-six million, eight hundred thirty-six thousand, four hundred fourteen".