1286680065 has 32 divisors (see below), whose sum is σ = 2247523200. Its totient is φ = 623377920.

The previous prime is 1286680051. The next prime is 1286680067. The reversal of 1286680065 is 5600866821.

It is not a de Polignac number, because 1286680065 - 2⁶ = 1286680001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1286679999 and 1286680026.

It is not an unprimeable number, because it can be changed into a prime (1286680067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339501 + ... + 343269.

It is an arithmetic number, because the mean of its divisors is an integer number (70235100).

Almost surely, 2^1286680065 is an apocalyptic number.

1286680065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1286680065 is a deficient number, since it is larger than the sum of its proper divisors (960843135).

1286680065 is a wasteful number, since it uses less digits than its factorization.

1286680065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1286680065 is about 35870.3229006933. The cubic root of 1286680065 is about 1087.6525710105.

The spelling of 1286680065 in words is "one billion, two hundred eighty-six million, six hundred eighty thousand, sixty-five".