65066398 has 4 divisors (see below), whose sum is σ = 97599600. Its totient is φ = 32533198.

The previous prime is 65066389. The next prime is 65066411. The reversal of 65066398 is 89366056.

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

It is a super-2 number, since 2×65066398² = 8467272297388808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16266598 + ... + 16266601.

It is an arithmetic number, because the mean of its divisors is an integer number (24399900).

Almost surely, 2^65066398 is an apocalyptic number.

65066398 is a deficient number, since it is larger than the sum of its proper divisors (32533202).

65066398 is a wasteful number, since it uses less digits than its factorization.

65066398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32533201.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 65066398 is about 8066.3745263904. The cubic root of 65066398 is about 402.2094360113.

The spelling of 65066398 in words is "sixty-five million, sixty-six thousand, three hundred ninety-eight".