10721653 has 2 divisors, whose sum is σ = 10721654. Its totient is φ = 10721652.

The previous prime is 10721621. The next prime is 10721723. The reversal of 10721653 is 35612701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6749604 + 3972049 = 2598^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 10721653 - 2⁵ = 10721621 is a prime.

It is a super-2 number, since 2×10721653² = 229907686104818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10721603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360826 + 5360827.

It is an arithmetic number, because the mean of its divisors is an integer number (5360827).

Almost surely, 2^10721653 is an apocalyptic number.

It is an amenable number.

10721653 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721653 is an equidigital number, since it uses as much as digits as its factorization.

10721653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 10721653 is about 3274.3935316330. The cubic root of 10721653 is about 220.5060869733.

The spelling of 10721653 in words is "ten million, seven hundred twenty-one thousand, six hundred fifty-three".