66162700 has 36 divisors (see below), whose sum is σ = 143983840. Its totient is φ = 26389440.

The previous prime is 66162683. The next prime is 66162713. The reversal of 66162700 is 726166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45586 + ... + 47014.

Almost surely, 2^66162700 is an apocalyptic number.

It is an amenable number.

66162700 is an abundant number, since it is smaller than the sum of its proper divisors (77821140).

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

66162700 is a wasteful number, since it uses less digits than its factorization.

66162700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66162700 is about 8134.0457338277. The cubic root of 66162700 is about 404.4558051951.

Adding to 66162700 its reverse (726166), we get a palindrome (66888866).

It can be divided in two parts, 6616 and 2700, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 66162700 in words is "sixty-six million, one hundred sixty-two thousand, seven hundred".