66662076 has 48 divisors (see below), whose sum is σ = 168146048. Its totient is φ = 20433600.

The previous prime is 66662069. The next prime is 66662093. The reversal of 66662076 is 67026666.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 15 ways as a sum of consecutive naturals, for example, 50991 + ... + 52281.

Almost surely, 2^66662076 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 66662076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84073024).

66662076 is an abundant number, since it is smaller than the sum of its proper divisors (101483972).

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

66662076 is a wasteful number, since it uses less digits than its factorization.

66662076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 66662076 is about 8164.6846846648. The cubic root of 66662076 is about 405.4708257039.

The spelling of 66662076 in words is "sixty-six million, six hundred sixty-two thousand, seventy-six".