1055667865 has 16 divisors (see below), whose sum is σ = 1448599680. Its totient is φ = 723473280.

The previous prime is 1055667863. The next prime is 1055667871. The reversal of 1055667865 is 5687665501.

It is not a de Polignac number, because 1055667865 - 2¹ = 1055667863 is a prime.

It is a super-2 number, since 2×1055667865² = 2228869282387316450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055667863) 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, 61645 + ... + 76885.

It is an arithmetic number, because the mean of its divisors is an integer number (90537480).

Almost surely, 2^1055667865 is an apocalyptic number.

It is an amenable number.

1055667865 is a deficient number, since it is larger than the sum of its proper divisors (392931815).

1055667865 is a wasteful number, since it uses less digits than its factorization.

1055667865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17232.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The square root of 1055667865 is about 32491.0428426051. The cubic root of 1055667865 is about 1018.2219005544.

The spelling of 1055667865 in words is "one billion, fifty-five million, six hundred sixty-seven thousand, eight hundred sixty-five".