1030640645 has 8 divisors (see below), whose sum is σ = 1253711256. Its totient is φ = 813217536.

The previous prime is 1030640621. The next prime is 1030640647. The reversal of 1030640645 is 5460460301.

It is a happy number.

1030640645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 129800449 + 900840196 = 11393^2 + 30014^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1030640645 - 2¹² = 1030636549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030640647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411472 + ... + 1412201.

It is an arithmetic number, because the mean of its divisors is an integer number (156713907).

Almost surely, 2^1030640645 is an apocalyptic number.

It is an amenable number.

1030640645 is a deficient number, since it is larger than the sum of its proper divisors (223070611).

1030640645 is an equidigital number, since it uses as much as digits as its factorization.

1030640645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823751.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1030640645 is about 32103.5924002284. The cubic root of 1030640645 is about 1010.1109720239.

The spelling of 1030640645 in words is "one billion, thirty million, six hundred forty thousand, six hundred forty-five".