66103612 has 6 divisors (see below), whose sum is σ = 115681328. Its totient is φ = 33051804.

The previous prime is 66103601. The next prime is 66103613. The reversal of 66103612 is 21630166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66103613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8262948 + ... + 8262955.

Almost surely, 2^66103612 is an apocalyptic number.

It is an amenable number.

66103612 is a deficient number, since it is larger than the sum of its proper divisors (49577716).

66103612 is a wasteful number, since it uses less digits than its factorization.

66103612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525907 (or 16525905 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 66103612 is about 8130.4127816489. The cubic root of 66103612 is about 404.3353667280.

Adding to 66103612 its reverse (21630166), we get a palindrome (87733778).

The spelling of 66103612 in words is "sixty-six million, one hundred three thousand, six hundred twelve".