66935390 has 8 divisors (see below), whose sum is σ = 120483720. Its totient is φ = 26774152.

The previous prime is 66935383. The next prime is 66935399. The reversal of 66935390 is 9353966.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66935399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3346760 + ... + 3346779.

It is an arithmetic number, because the mean of its divisors is an integer number (15060465).

Almost surely, 2^66935390 is an apocalyptic number.

66935390 is a deficient number, since it is larger than the sum of its proper divisors (53548330).

66935390 is a wasteful number, since it uses less digits than its factorization.

66935390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693546.

The product of its (nonzero) digits is 131220, while the sum is 41.

The square root of 66935390 is about 8181.4051360387. The cubic root of 66935390 is about 406.0242125222.

It can be divided in two parts, 6 and 6935390, that added together give a palindrome (6935396).

The spelling of 66935390 in words is "sixty-six million, nine hundred thirty-five thousand, three hundred ninety".