1023012566 has 16 divisors (see below), whose sum is σ = 1580750640. Its totient is φ = 496235520.

The previous prime is 1023012563. The next prime is 1023012569. The reversal of 1023012566 is 6652103201.

It is an interprime number because it is at equal distance from previous prime (1023012563) and next prime (1023012569).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023012563) 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, 20171 + ... + 49526.

It is an arithmetic number, because the mean of its divisors is an integer number (98796915).

Almost surely, 2^1023012566 is an apocalyptic number.

1023012566 is a deficient number, since it is larger than the sum of its proper divisors (557738074).

1023012566 is a wasteful number, since it uses less digits than its factorization.

1023012566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69919.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1023012566 is about 31984.5676225270. The cubic root of 1023012566 is about 1007.6127542429.

Adding to 1023012566 its reverse (6652103201), we get a palindrome (7675115767).

The spelling of 1023012566 in words is "one billion, twenty-three million, twelve thousand, five hundred sixty-six".