66956076 has 108 divisors (see below), whose sum is σ = 196068600. Its totient is φ = 19198080.

The previous prime is 66956069. The next prime is 66956107. The reversal of 66956076 is 67065966.

It is a super-2 number, since 2×66956076² = 8966232226635552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 82360 + ... + 83168.

It is an arithmetic number, because the mean of its divisors is an integer number (1815450).

Almost surely, 2^66956076 is an apocalyptic number.

66956076 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66956076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98034300).

66956076 is an abundant number, since it is smaller than the sum of its proper divisors (129112524).

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

66956076 is a wasteful number, since it uses less digits than its factorization.

66956076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 66956076 is about 8182.6692466456. The cubic root of 66956076 is about 406.0660347022.

The spelling of 66956076 in words is "sixty-six million, nine hundred fifty-six thousand, seventy-six".