1206172703 has 16 divisors (see below), whose sum is σ = 1257669504. Its totient is φ = 1155932160.

The previous prime is 1206172699. The next prime is 1206172717. The reversal of 1206172703 is 3072716021.

It is a cyclic number.

It is not a de Polignac number, because 1206172703 - 2² = 1206172699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206174703) 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, 736001 + ... + 737637.

It is an arithmetic number, because the mean of its divisors is an integer number (78604344).

Almost surely, 2^1206172703 is an apocalyptic number.

1206172703 is a deficient number, since it is larger than the sum of its proper divisors (51496801).

1206172703 is a wasteful number, since it uses less digits than its factorization.

1206172703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1206172703 is about 34729.9971638352. The cubic root of 1206172703 is about 1064.4775304692.

Adding to 1206172703 its reverse (3072716021), we get a palindrome (4278888724).

The spelling of 1206172703 in words is "one billion, two hundred six million, one hundred seventy-two thousand, seven hundred three".