65274821 has 2 divisors, whose sum is σ = 65274822. Its totient is φ = 65274820.

The previous prime is 65274763. The next prime is 65274841. The reversal of 65274821 is 12847256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64224196 + 1050625 = 8014^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 65274821 - 2⁶ = 65274757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65274841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32637410 + 32637411.

It is an arithmetic number, because the mean of its divisors is an integer number (32637411).

Almost surely, 2^65274821 is an apocalyptic number.

It is an amenable number.

65274821 is a deficient number, since it is larger than the sum of its proper divisors (1).

65274821 is an equidigital number, since it uses as much as digits as its factorization.

65274821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 65274821 is about 8079.2834459499. The cubic root of 65274821 is about 402.6384354644.

The spelling of 65274821 in words is "sixty-five million, two hundred seventy-four thousand, eight hundred twenty-one".