65656494 has 20 divisors (see below), whose sum is σ = 147119544. Its totient is φ = 21885444.

The previous prime is 65656489. The next prime is 65656501. The reversal of 65656494 is 49465656.

It is a Curzon number.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 202482 + ... + 202805.

Almost surely, 2^65656494 is an apocalyptic number.

65656494 is an abundant number, since it is smaller than the sum of its proper divisors (81463050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65656494 is a wasteful number, since it uses less digits than its factorization.

65656494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405301 (or 405292 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 65656494 is about 8102.8694917295. The cubic root of 65656494 is about 403.4216760399.

The spelling of 65656494 in words is "sixty-five million, six hundred fifty-six thousand, four hundred ninety-four".