1066729747 has 4 divisors (see below), whose sum is σ = 1101140416. Its totient is φ = 1032319080.

The previous prime is 1066729739. The next prime is 1066729751. The reversal of 1066729747 is 7479276601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066729747 - 2³ = 1066729739 is a prime.

It is a super-2 number, since 2×1066729747² = 2275824706269368018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066729747.

It is not an unprimeable number, because it can be changed into a prime (1066759747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17205288 + ... + 17205349.

It is an arithmetic number, because the mean of its divisors is an integer number (275285104).

Almost surely, 2^1066729747 is an apocalyptic number.

1066729747 is a deficient number, since it is larger than the sum of its proper divisors (34410669).

1066729747 is an equidigital number, since it uses as much as digits as its factorization.

1066729747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34410668.

The product of its (nonzero) digits is 889056, while the sum is 49.

The square root of 1066729747 is about 32660.8289392661. The cubic root of 1066729747 is about 1021.7660507337.

The spelling of 1066729747 in words is "one billion, sixty-six million, seven hundred twenty-nine thousand, seven hundred forty-seven".