97202813 has 4 divisors (see below), whose sum is σ = 97224828. Its totient is φ = 97180800.

The previous prime is 97202773. The next prime is 97202837. The reversal of 97202813 is 31820279.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82047364 + 15155449 = 9058^2 + 3893^2 .

It is a cyclic number.

It is not a de Polignac number, because 97202813 - 2⁸ = 97202557 is a prime.

It is a super-2 number, since 2×97202813² = 18896773710225938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97202813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97202843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (24306207).

Almost surely, 2^97202813 is an apocalyptic number.

It is an amenable number.

97202813 is a deficient number, since it is larger than the sum of its proper divisors (22015).

97202813 is a wasteful number, since it uses less digits than its factorization.

97202813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22014.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 97202813 is about 9859.1486955010. The cubic root of 97202813 is about 459.7900948428.

The spelling of 97202813 in words is "ninety-seven million, two hundred two thousand, eight hundred thirteen".