1285468566 has 64 divisors (see below), whose sum is σ = 2798945280. Its totient is φ = 392071680.

The previous prime is 1285468523. The next prime is 1285468567. The reversal of 1285468566 is 6658645821.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285468567) 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, 538696 + ... + 541076.

It is an arithmetic number, because the mean of its divisors is an integer number (43733520).

Almost surely, 2^1285468566 is an apocalyptic number.

1285468566 is an abundant number, since it is smaller than the sum of its proper divisors (1513476714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285468566 is a wasteful number, since it uses less digits than its factorization.

1285468566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549.

The product of its digits is 2764800, while the sum is 51.

The square root of 1285468566 is about 35853.4317185956. The cubic root of 1285468566 is about 1087.3110969020.

The spelling of 1285468566 in words is "one billion, two hundred eighty-five million, four hundred sixty-eight thousand, five hundred sixty-six".