65665426 has 8 divisors (see below), whose sum is σ = 98532720. Its totient is φ = 32821188.

The previous prime is 65665403. The next prime is 65665433. The reversal of 65665426 is 62456656.

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

It is a super-2 number, since 2×65665426² = 8623896343522952, 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, 7105 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (12316590).

Almost surely, 2^65665426 is an apocalyptic number.

65665426 is a deficient number, since it is larger than the sum of its proper divisors (32867294).

65665426 is a wasteful number, since it uses less digits than its factorization.

65665426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11528.

The product of its digits is 259200, while the sum is 40.

The square root of 65665426 is about 8103.4206357562. The cubic root of 65665426 is about 403.4399692242.

The spelling of 65665426 in words is "sixty-five million, six hundred sixty-five thousand, four hundred twenty-six".