65212330 has 16 divisors (see below), whose sum is σ = 117898920. Its totient is φ = 25970112.

The previous prime is 65212307. The next prime is 65212361. The reversal of 65212330 is 3321256.

It can be written as a sum of positive squares in 4 ways, for example, as 61763881 + 3448449 = 7859^2 + 1857^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11949 + ... + 16528.

Almost surely, 2^65212330 is an apocalyptic number.

65212330 is a deficient number, since it is larger than the sum of its proper divisors (52686590).

65212330 is a wasteful number, since it uses less digits than its factorization.

65212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28713.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 65212330 is about 8075.4151596063. The cubic root of 65212330 is about 402.5099054955.

Adding to 65212330 its reverse (3321256), we get a palindrome (68533586).

The spelling of 65212330 in words is "sixty-five million, two hundred twelve thousand, three hundred thirty".