65662066 has 4 divisors (see below), whose sum is σ = 98493102. Its totient is φ = 32831032.

The previous prime is 65662027. The next prime is 65662073. The reversal of 65662066 is 66026656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 18671041 = 6855^2 + 4321^2 .

It is a super-2 number, since 2×65662066² = 8623013822776712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16415515 + ... + 16415518.

Almost surely, 2^65662066 is an apocalyptic number.

65662066 is a deficient number, since it is larger than the sum of its proper divisors (32831036).

65662066 is a wasteful number, since it uses less digits than its factorization.

65662066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32831035.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 65662066 is about 8103.2133132480. The cubic root of 65662066 is about 403.4330879702.

The spelling of 65662066 in words is "sixty-five million, six hundred sixty-two thousand, sixty-six".