1064650641 has 4 divisors (see below), whose sum is σ = 1419534192. Its totient is φ = 709767092.

The previous prime is 1064650607. The next prime is 1064650661. The reversal of 1064650641 is 1460564601.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1064650641 - 2¹⁰ = 1064649617 is a prime.

It is a super-2 number, since 2×1064650641² = 2266961974763421762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064650661) 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, 177441771 + ... + 177441776.

It is an arithmetic number, because the mean of its divisors is an integer number (354883548).

Almost surely, 2^1064650641 is an apocalyptic number.

It is an amenable number.

1064650641 is a deficient number, since it is larger than the sum of its proper divisors (354883551).

1064650641 is an equidigital number, since it uses as much as digits as its factorization.

1064650641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354883550.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1064650641 is about 32628.9846762047. The cubic root of 1064650641 is about 1021.1017957720.

The spelling of 1064650641 in words is "one billion, sixty-four million, six hundred fifty thousand, six hundred forty-one".