1068532261 has 4 divisors (see below), whose sum is σ = 1068660000. Its totient is φ = 1068404524.

The previous prime is 1068532259. The next prime is 1068532277. The reversal of 1068532261 is 1622358601.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1622358601 = 5477 ⋅296213.

It is a cyclic number.

It is not a de Polignac number, because 1068532261 - 2¹ = 1068532259 is a prime.

It is a super-2 number, since 2×1068532261² = 2283522385595544242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068532061) 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, 50371 + ... + 68368.

It is an arithmetic number, because the mean of its divisors is an integer number (267165000).

Almost surely, 2^1068532261 is an apocalyptic number.

It is an amenable number.

1068532261 is a deficient number, since it is larger than the sum of its proper divisors (127739).

1068532261 is an equidigital number, since it uses as much as digits as its factorization.

1068532261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127738.

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

The square root of 1068532261 is about 32688.4117234227. The cubic root of 1068532261 is about 1022.3412389731.

The spelling of 1068532261 in words is "one billion, sixty-eight million, five hundred thirty-two thousand, two hundred sixty-one".