66102918 has 16 divisors (see below), whose sum is σ = 151092480. Its totient is φ = 18886536.

The previous prime is 66102899. The next prime is 66102923. The reversal of 66102918 is 81920166.

66102918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66102918² = 8739191536229448, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786898 + ... + 786981.

It is an arithmetic number, because the mean of its divisors is an integer number (9443280).

Almost surely, 2^66102918 is an apocalyptic number.

66102918 is an abundant number, since it is smaller than the sum of its proper divisors (84989562).

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

66102918 is a wasteful number, since it uses less digits than its factorization.

66102918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573891.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 66102918 is about 8130.3701022770. The cubic root of 66102918 is about 404.3339517285. Note that the first 3 decimals are identical.

It can be divided in two parts, 66102 and 918, that multiplied together give a triangular number (60681636 = T₁₁₀₁₆).

The spelling of 66102918 in words is "sixty-six million, one hundred two thousand, nine hundred eighteen".