97205815 has 8 divisors (see below), whose sum is σ = 133310880. Its totient is φ = 66655392.

The previous prime is 97205809. The next prime is 97205827. The reversal of 97205815 is 51850279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97205815 - 2³ = 97205807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388620 + ... + 1388689.

It is an arithmetic number, because the mean of its divisors is an integer number (16663860).

Almost surely, 2^97205815 is an apocalyptic number.

97205815 is a deficient number, since it is larger than the sum of its proper divisors (36105065).

97205815 is a wasteful number, since it uses less digits than its factorization.

97205815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777321.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 97205815 is about 9859.3009387076. The cubic root of 97205815 is about 459.7948281614.

The spelling of 97205815 in words is "ninety-seven million, two hundred five thousand, eight hundred fifteen".