66103732 has 6 divisors (see below), whose sum is σ = 115681538. Its totient is φ = 33051864.

The previous prime is 66103729. The next prime is 66103759. The reversal of 66103732 is 23730166.

It can be written as a sum of positive squares in only one way, i.e., 47389456 + 18714276 = 6884^2 + 4326^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66103732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8262963 + ... + 8262970.

Almost surely, 2^66103732 is an apocalyptic number.

It is an amenable number.

66103732 is a deficient number, since it is larger than the sum of its proper divisors (49577806).

66103732 is a wasteful number, since it uses less digits than its factorization.

66103732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525937 (or 16525935 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 66103732 is about 8130.4201613447. The cubic root of 66103732 is about 404.3356113955.

Adding to 66103732 its reverse (23730166), we get a palindrome (89833898).

The spelling of 66103732 in words is "sixty-six million, one hundred three thousand, seven hundred thirty-two".