1067641265 has 8 divisors (see below), whose sum is σ = 1284215208. Its totient is φ = 852082560.

The previous prime is 1067641261. The next prime is 1067641277. The reversal of 1067641265 is 5621467601.

It can be written as a sum of positive squares in 4 ways, for example, as 64272289 + 1003368976 = 8017^2 + 31676^2 .

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

It is not a de Polignac number, because 1067641265 - 2² = 1067641261 is a prime.

It is a super-2 number, since 2×1067641265² = 2279715741461600450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1067641261) 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, 251492 + ... + 255701.

It is an arithmetic number, because the mean of its divisors is an integer number (160526901).

Almost surely, 2^1067641265 is an apocalyptic number.

It is an amenable number.

1067641265 is a deficient number, since it is larger than the sum of its proper divisors (216573943).

1067641265 is an equidigital number, since it uses as much as digits as its factorization.

1067641265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507619.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1067641265 is about 32674.7802593988. The cubic root of 1067641265 is about 1022.0570000876.

The spelling of 1067641265 in words is "one billion, sixty-seven million, six hundred forty-one thousand, two hundred sixty-five".