1066640024 has 8 divisors (see below), whose sum is σ = 1999950060. Its totient is φ = 533320008.

The previous prime is 1066640023. The next prime is 1066640041. The reversal of 1066640024 is 4200466601.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1066640024² = 2275441881597441152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066640023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66664994 + ... + 66665009.

Almost surely, 2^1066640024 is an apocalyptic number.

It is an amenable number.

1066640024 is a deficient number, since it is larger than the sum of its proper divisors (933310036).

1066640024 is a wasteful number, since it uses less digits than its factorization.

1066640024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133330009 (or 133330005 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1066640024 is about 32659.4553536950. The cubic root of 1066640024 is about 1021.7374029011.

The spelling of 1066640024 in words is "one billion, sixty-six million, six hundred forty thousand, twenty-four".