140643066 has 8 divisors (see below), whose sum is σ = 281286144. Its totient is φ = 46881020.

The previous prime is 140643059. The next prime is 140643103. The reversal of 140643066 is 660346041.

It is a sphenic number, since it is the product of 3 distinct primes.

140643066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11720250 + ... + 11720261.

It is an arithmetic number, because the mean of its divisors is an integer number (35160768).

Almost surely, 2^140643066 is an apocalyptic number.

140643066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140643066 is a wasteful number, since it uses less digits than its factorization.

140643066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23440516.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 140643066 is about 11859.3029306111. The cubic root of 140643066 is about 520.0432237246.

The spelling of 140643066 in words is "one hundred forty million, six hundred forty-three thousand, sixty-six".