97800653 has 2 divisors, whose sum is σ = 97800654. Its totient is φ = 97800652.

The previous prime is 97800649. The next prime is 97800671. The reversal of 97800653 is 35600879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 20043529 = 8818^2 + 4477^2 .

It is an emirp because it is prime and its reverse (35600879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97800653 - 2² = 97800649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97800613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48900326 + 48900327.

It is an arithmetic number, because the mean of its divisors is an integer number (48900327).

Almost surely, 2^97800653 is an apocalyptic number.

It is an amenable number.

97800653 is a deficient number, since it is larger than the sum of its proper divisors (1).

97800653 is an equidigital number, since it uses as much as digits as its factorization.

97800653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 97800653 is about 9889.4212671925. The cubic root of 97800653 is about 460.7308058965.

The spelling of 97800653 in words is "ninety-seven million, eight hundred thousand, six hundred fifty-three".