1206450645 has 32 divisors (see below), whose sum is σ = 2046373632. Its totient is φ = 604849152.

The previous prime is 1206450631. The next prime is 1206450649. The reversal of 1206450645 is 5460546021.

It is not a de Polignac number, because 1206450645 - 2⁴ = 1206450629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206450649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248259 + ... + 253071.

It is an arithmetic number, because the mean of its divisors is an integer number (63949176).

Almost surely, 2^1206450645 is an apocalyptic number.

1206450645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1206450645 is a deficient number, since it is larger than the sum of its proper divisors (839922987).

1206450645 is a wasteful number, since it uses less digits than its factorization.

1206450645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5821.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1206450645 is about 34733.9984021420. The cubic root of 1206450645 is about 1064.5592877749.

Adding to 1206450645 its reverse (5460546021), we get a palindrome (6666996666).

The spelling of 1206450645 in words is "one billion, two hundred six million, four hundred fifty thousand, six hundred forty-five".