1065745657 has 8 divisors (see below), whose sum is σ = 1128731976. Its totient is φ = 1002792192.

The previous prime is 1065745649. The next prime is 1065745661. The reversal of 1065745657 is 7565475601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 83612736 + 982132921 = 9144^2 + 31339^2 .

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

It is not a de Polignac number, because 1065745657 - 2³ = 1065745649 is a prime.

It is a super-2 number, since 2×1065745657² = 2271627610828723298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065745607) 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, 97723 + ... + 108079.

It is an arithmetic number, because the mean of its divisors is an integer number (141091497).

Almost surely, 2^1065745657 is an apocalyptic number.

1065745657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1065745657 is a deficient number, since it is larger than the sum of its proper divisors (62986319).

1065745657 is a wasteful number, since it uses less digits than its factorization.

1065745657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16427.

The product of its (nonzero) digits is 882000, while the sum is 46.

The square root of 1065745657 is about 32645.7601688182. The cubic root of 1065745657 is about 1021.4517508471.

The spelling of 1065745657 in words is "one billion, sixty-five million, seven hundred forty-five thousand, six hundred fifty-seven".