1206690772 has 12 divisors (see below), whose sum is σ = 2413381600. Its totient is φ = 517153176.

The previous prime is 1206690761. The next prime is 1206690773. The reversal of 1206690772 is 2770966021.

1206690772 is an admirable number.

It is a super-2 number, since 2×1206690772² = 2912205238459911968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206690773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21548022 + ... + 21548077.

Almost surely, 2^1206690772 is an apocalyptic number.

It is an amenable number.

1206690772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1206690772 is a wasteful number, since it uses less digits than its factorization.

1206690772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43096110 (or 43096108 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1206690772 is about 34737.4548866206. The cubic root of 1206690772 is about 1064.6299115978.

The spelling of 1206690772 in words is "one billion, two hundred six million, six hundred ninety thousand, seven hundred seventy-two".