75997197 has 20 divisors (see below), whose sum is σ = 117445020. Its totient is φ = 48916224.

The previous prime is 75997183. The next prime is 75997199. The reversal of 75997197 is 79179957.

It can be written as a sum of positive squares in 2 ways, for example, as 54597321 + 21399876 = 7389^2 + 4626^2 .

It is not a de Polignac number, because 75997197 - 2¹⁵ = 75964429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75997199) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13828 + ... + 18525.

It is an arithmetic number, because the mean of its divisors is an integer number (5872251).

Almost surely, 2^75997197 is an apocalyptic number.

It is an amenable number.

75997197 is a deficient number, since it is larger than the sum of its proper divisors (41447823).

75997197 is a wasteful number, since it uses less digits than its factorization.

75997197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32394 (or 32385 counting only the distinct ones).

The product of its digits is 1250235, while the sum is 54.

The square root of 75997197 is about 8717.6371225235. The cubic root of 75997197 is about 423.5771508994.

The spelling of 75997197 in words is "seventy-five million, nine hundred ninety-seven thousand, one hundred ninety-seven".