97697215 has 96 divisors (see below), whose sum is σ = 165473280. Its totient is φ = 53898240.

The previous prime is 97697209. The next prime is 97697231. The reversal of 97697215 is 51279679.

It is a happy number.

It is not a de Polignac number, because 97697215 - 2⁷ = 97697087 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 (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1655856 + ... + 1655914.

It is an arithmetic number, because the mean of its divisors is an integer number (1723680).

Almost surely, 2^97697215 is an apocalyptic number.

97697215 is a deficient number, since it is larger than the sum of its proper divisors (67776065).

97697215 is a wasteful number, since it uses less digits than its factorization.

97697215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 122 counting only the distinct ones).

The product of its digits is 238140, while the sum is 46.

The square root of 97697215 is about 9884.1901539782. The cubic root of 97697215 is about 460.5683193047.

The spelling of 97697215 in words is "ninety-seven million, six hundred ninety-seven thousand, two hundred fifteen".