65661002 has 8 divisors (see below), whose sum is σ = 107445312. Its totient is φ = 29845900.

The previous prime is 65660981. The next prime is 65661047. The reversal of 65661002 is 20016656.

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

It is a super-2 number, since 2×65661002² = 8622734367288008, which contains 22 as substring.

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, 1492274 + ... + 1492317.

It is an arithmetic number, because the mean of its divisors is an integer number (13430664).

Almost surely, 2^65661002 is an apocalyptic number.

65661002 is a deficient number, since it is larger than the sum of its proper divisors (41784310).

65661002 is a wasteful number, since it uses less digits than its factorization.

65661002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984604.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 65661002 is about 8103.1476600146. The cubic root of 65661002 is about 403.4309088575.

Adding to 65661002 its reverse (20016656), we get a palindrome (85677658).

The spelling of 65661002 in words is "sixty-five million, six hundred sixty-one thousand, two".