98202721 has 2 divisors, whose sum is σ = 98202722. Its totient is φ = 98202720.

The previous prime is 98202707. The next prime is 98202737. The reversal of 98202721 is 12720289.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98010000 + 192721 = 9900^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 98202721 - 2¹¹ = 98200673 is a prime.

It is not a weakly prime, because it can be changed into another prime (98202751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49101360 + 49101361.

It is an arithmetic number, because the mean of its divisors is an integer number (49101361).

Almost surely, 2^98202721 is an apocalyptic number.

It is an amenable number.

98202721 is a deficient number, since it is larger than the sum of its proper divisors (1).

98202721 is an equidigital number, since it uses as much as digits as its factorization.

98202721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 98202721 is about 9909.7286037510. The cubic root of 98202721 is about 461.3613123830.

The spelling of 98202721 in words is "ninety-eight million, two hundred two thousand, seven hundred twenty-one".