1076507821 has 2 divisors, whose sum is σ = 1076507822. Its totient is φ = 1076507820.

The previous prime is 1076507819. The next prime is 1076507903. The reversal of 1076507821 is 1287056701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1004002596 + 72505225 = 31686^2 + 8515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1076507821 - 2¹ = 1076507819 is a prime.

Together with 1076507819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1076507921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538253910 + 538253911.

It is an arithmetic number, because the mean of its divisors is an integer number (538253911).

Almost surely, 2^1076507821 is an apocalyptic number.

It is an amenable number.

1076507821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1076507821 is an equidigital number, since it uses as much as digits as its factorization.

1076507821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1076507821 is about 32810.1786188372. The cubic root of 1076507821 is about 1024.8785328201.

The spelling of 1076507821 in words is "one billion, seventy-six million, five hundred seven thousand, eight hundred twenty-one".