193980066 has 32 divisors (see below), whose sum is σ = 444216960. Its totient is φ = 55318656.

The previous prime is 193980029. The next prime is 193980067. The reversal of 193980066 is 660089391.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (193980067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19840 + ... + 27956.

It is an arithmetic number, because the mean of its divisors is an integer number (13881780).

Almost surely, 2^193980066 is an apocalyptic number.

193980066 is an abundant number, since it is smaller than the sum of its proper divisors (250236894).

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

193980066 is a wasteful number, since it uses less digits than its factorization.

193980066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 193980066 is about 13927.6726699043. The cubic root of 193980066 is about 578.8762088405.

The spelling of 193980066 in words is "one hundred ninety-three million, nine hundred eighty thousand, sixty-six".