66037692 has 144 divisors (see below), whose sum is σ = 197648640. Its totient is φ = 17031168.

The previous prime is 66037667. The next prime is 66037693. The reversal of 66037692 is 29673066.

It is a self number, because there is not a number n which added to its sum of digits gives 66037692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66037693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256828 + ... + 257084.

It is an arithmetic number, because the mean of its divisors is an integer number (1372560).

Almost surely, 2^66037692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66037692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98824320).

66037692 is an abundant number, since it is smaller than the sum of its proper divisors (131610948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66037692 is a wasteful number, since it uses less digits than its factorization.

66037692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 66037692 is about 8126.3578557679. The cubic root of 66037692 is about 404.2009179367.

The spelling of 66037692 in words is "sixty-six million, thirty-seven thousand, six hundred ninety-two".