1068047977 has 4 divisors (see below), whose sum is σ = 1068138576. Its totient is φ = 1067957380.

The previous prime is 1068047947. The next prime is 1068047983. The reversal of 1068047977 is 7797408601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1068047977 is a prime.

It is a super-2 number, since 2×1068047977² = 2281452962347585058, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 1068047977.

It is not an unprimeable number, because it can be changed into a prime (1068047947) 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, 24403 + ... + 52264.

It is an arithmetic number, because the mean of its divisors is an integer number (267034644).

Almost surely, 2^1068047977 is an apocalyptic number.

It is an amenable number.

1068047977 is a deficient number, since it is larger than the sum of its proper divisors (90599).

1068047977 is an equidigital number, since it uses as much as digits as its factorization.

1068047977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90598.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 1068047977 is about 32681.0033046723. The cubic root of 1068047977 is about 1022.1867659204.

The spelling of 1068047977 in words is "one billion, sixty-eight million, forty-seven thousand, nine hundred seventy-seven".