66737892 has 48 divisors (see below), whose sum is σ = 171617600. Its totient is φ = 20055168.

The previous prime is 66737863. The next prime is 66737897. The reversal of 66737892 is 29873766.

It is not an unprimeable number, because it can be changed into a prime (66737897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1734 + ... + 11682.

Almost surely, 2^66737892 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 66737892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85808800).

66737892 is an abundant number, since it is smaller than the sum of its proper divisors (104879708).

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

66737892 is a wasteful number, since it uses less digits than its factorization.

66737892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012 (or 10010 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 66737892 is about 8169.3262880118. The cubic root of 66737892 is about 405.6244839314.

The spelling of 66737892 in words is "sixty-six million, seven hundred thirty-seven thousand, eight hundred ninety-two".