66418703 has 16 divisors (see below), whose sum is σ = 73831296. Its totient is φ = 59361120.

The previous prime is 66418673. The next prime is 66418717. The reversal of 66418703 is 30781466.

It is not a de Polignac number, because 66418703 - 2¹⁴ = 66402319 is a prime.

It is a super-2 number, since 2×66418703² = 8822888216404418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66418753) 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, 72776 + ... + 73682.

It is an arithmetic number, because the mean of its divisors is an integer number (4614456).

Almost surely, 2^66418703 is an apocalyptic number.

66418703 is a deficient number, since it is larger than the sum of its proper divisors (7412593).

66418703 is a wasteful number, since it uses less digits than its factorization.

66418703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66418703 is about 8149.7670518856. The cubic root of 66418703 is about 404.9767867608.

The spelling of 66418703 in words is "sixty-six million, four hundred eighteen thousand, seven hundred three".