66416410 has 16 divisors (see below), whose sum is σ = 124747776. Its totient is φ = 25411408.

The previous prime is 66416407. The next prime is 66416423. The reversal of 66416410 is 1461466.

It is a super-2 number, since 2×66416410² = 8822279034576200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144154 + ... + 144613.

It is an arithmetic number, because the mean of its divisors is an integer number (7796736).

Almost surely, 2^66416410 is an apocalyptic number.

66416410 is a deficient number, since it is larger than the sum of its proper divisors (58331366).

66416410 is a wasteful number, since it uses less digits than its factorization.

66416410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288797.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66416410 is about 8149.6263718038. The cubic root of 66416410 is about 404.9721263142.

Adding to 66416410 its reverse (1461466), we get a palindrome (67877876).

The spelling of 66416410 in words is "sixty-six million, four hundred sixteen thousand, four hundred ten".