1064651641 has 9 divisors (see below), whose sum is σ = 1083002949. Its totient is φ = 1046607804.

The previous prime is 1064651629. The next prime is 1064651647. The reversal of 1064651641 is 1461564601.

The square root of 1064651641 is 32629.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1064651641 - 2¹³ = 1064643449 is a prime.

It is a super-2 number, since 2×1064651641² = 2266966233367985762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1064651597 and 1064651606.

It is not an unprimeable number, because it can be changed into a prime (1064651647) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2185900 + ... + 2186386.

It is an arithmetic number, because the mean of its divisors is an integer number (120333661).

Almost surely, 2^1064651641 is an apocalyptic number.

1064651641 is the 32629-th square number.

1064651641 is the 16315-th centered octagonal number.

It is an amenable number.

1064651641 is a deficient number, since it is larger than the sum of its proper divisors (18351308).

1064651641 is an frugal number, since it uses more digits than its factorization.

1064651641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The cubic root of 1064651641 is about 1021.1021154704.

The spelling of 1064651641 in words is "one billion, sixty-four million, six hundred fifty-one thousand, six hundred forty-one".