75697497 has 10 divisors (see below), whose sum is σ = 113079098. Its totient is φ = 50464944.

The previous prime is 75697487. The next prime is 75697499. The reversal of 75697497 is 79479657.

It is a happy number.

75697497 is a `hidden beast` number, since 7 + 569 + 74 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 67963536 + 7733961 = 8244^2 + 2781^2 .

It is not a de Polignac number, because 75697497 - 2¹⁴ = 75681113 is a prime.

It is a super-2 number, since 2×75697497² = 11460222104130018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75697499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 467188 + ... + 467349.

Almost surely, 2^75697497 is an apocalyptic number.

It is an amenable number.

75697497 is a deficient number, since it is larger than the sum of its proper divisors (37381601).

75697497 is an equidigital number, since it uses as much as digits as its factorization.

75697497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934549 (or 934540 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 75697497 is about 8700.4308514004. The cubic root of 75697497 is about 423.0196158098.

The spelling of 75697497 in words is "seventy-five million, six hundred ninety-seven thousand, four hundred ninety-seven".