1064661121 has 8 divisors (see below), whose sum is σ = 1086619688. Its totient is φ = 1042848000.

The previous prime is 1064661109. The next prime is 1064661131. The reversal of 1064661121 is 1211664601.

It can be written as a sum of positive squares in 4 ways, for example, as 87160896 + 977500225 = 9336^2 + 31265^2 .

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 1064661121 - 2¹¹ = 1064659073 is a prime.

It is a super-2 number, since 2×1064661121² = 2267006605137953282, which contains 22 as substring.

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 1064661121.

It is not an unprimeable number, because it can be changed into a prime (1064661131) 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, 21510 + ... + 50911.

It is an arithmetic number, because the mean of its divisors is an integer number (135827461).

Almost surely, 2^1064661121 is an apocalyptic number.

It is an amenable number.

1064661121 is a deficient number, since it is larger than the sum of its proper divisors (21958567).

1064661121 is an equidigital number, since it uses as much as digits as its factorization.

1064661121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72723.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1064661121 is about 32629.1452692221. The cubic root of 1064661121 is about 1021.1051462018.

The spelling of 1064661121 in words is "one billion, sixty-four million, six hundred sixty-one thousand, one hundred twenty-one".