1072055865 has 8 divisors (see below), whose sum is σ = 1715289408. Its totient is φ = 571763120.

The previous prime is 1072055863. The next prime is 1072055869. The reversal of 1072055865 is 5685502701.

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

It is not a de Polignac number, because 1072055865 - 2¹ = 1072055863 is a prime.

It is a super-2 number, since 2×1072055865² = 2298607555361796450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1072055863) 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, 35735181 + ... + 35735210.

It is an arithmetic number, because the mean of its divisors is an integer number (214411176).

Almost surely, 2^1072055865 is an apocalyptic number.

1072055865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1072055865 is a deficient number, since it is larger than the sum of its proper divisors (643233543).

1072055865 is an equidigital number, since it uses as much as digits as its factorization.

1072055865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71470399.

The product of its (nonzero) digits is 84000, while the sum is 39.

The square root of 1072055865 is about 32742.2642008765. The cubic root of 1072055865 is about 1023.4637673106.

The spelling of 1072055865 in words is "one billion, seventy-two million, fifty-five thousand, eight hundred sixty-five".