65813946 has 32 divisors (see below), whose sum is σ = 143935488. Its totient is φ = 19896240.

The previous prime is 65813939. The next prime is 65813977. The reversal of 65813946 is 64931856.

It is a junction number, because it is equal to n+sod(n) for n = 65813898 and 65813907.

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 15 ways as a sum of consecutive naturals, for example, 35191 + ... + 37013.

It is an arithmetic number, because the mean of its divisors is an integer number (4497984).

Almost surely, 2^65813946 is an apocalyptic number.

65813946 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

65813946 is an abundant number, since it is smaller than the sum of its proper divisors (78121542).

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

65813946 is a wasteful number, since it uses less digits than its factorization.

65813946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386.

The product of its digits is 155520, while the sum is 42.

The square root of 65813946 is about 8112.5794911360. The cubic root of 65813946 is about 403.7439028176.

The spelling of 65813946 in words is "sixty-five million, eight hundred thirteen thousand, nine hundred forty-six".