66616350 has 24 divisors (see below), whose sum is σ = 165208920. Its totient is φ = 17764320.

The previous prime is 66616327. The next prime is 66616357. The reversal of 66616350 is 5361666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66616357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221905 + ... + 222204.

It is an arithmetic number, because the mean of its divisors is an integer number (6883705).

Almost surely, 2^66616350 is an apocalyptic number.

66616350 is an abundant number, since it is smaller than the sum of its proper divisors (98592570).

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

66616350 is a wasteful number, since it uses less digits than its factorization.

66616350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444124 (or 444119 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 66616350 is about 8161.8839736914. The cubic root of 66616350 is about 405.3780953195.

It can be divided in two parts, 66616 and 350, that added together give a palindrome (66966).

The spelling of 66616350 in words is "sixty-six million, six hundred sixteen thousand, three hundred fifty".