1065747657 has 16 divisors (see below), whose sum is σ = 1545461568. Its totient is φ = 649348800.

The previous prime is 1065747649. The next prime is 1065747671. The reversal of 1065747657 is 7567475601.

It is not a de Polignac number, because 1065747657 - 2³ = 1065747649 is a prime.

It is a super-2 number, since 2×1065747657² = 2271636136801979298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065747157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131343 + ... + 139220.

It is an arithmetic number, because the mean of its divisors is an integer number (96591348).

Almost surely, 2^1065747657 is an apocalyptic number.

It is an amenable number.

1065747657 is a deficient number, since it is larger than the sum of its proper divisors (479713911).

1065747657 is a wasteful number, since it uses less digits than its factorization.

1065747657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270680.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The square root of 1065747657 is about 32645.7908006530. The cubic root of 1065747657 is about 1021.4523898057.

The spelling of 1065747657 in words is "one billion, sixty-five million, seven hundred forty-seven thousand, six hundred fifty-seven".