65820250 has 32 divisors (see below), whose sum is σ = 128583936. Its totient is φ = 25181200.

The previous prime is 65820203. The next prime is 65820263. The reversal of 65820250 is 5202856.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27 + ... + 11473.

It is an arithmetic number, because the mean of its divisors is an integer number (4018248).

Almost surely, 2^65820250 is an apocalyptic number.

65820250 is a deficient number, since it is larger than the sum of its proper divisors (62763686).

65820250 is a wasteful number, since it uses less digits than its factorization.

65820250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11487 (or 11477 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 65820250 is about 8112.9680142350. The cubic root of 65820250 is about 403.7567932988.

The spelling of 65820250 in words is "sixty-five million, eight hundred twenty thousand, two hundred fifty".