76842197 has 4 divisors (see below), whose sum is σ = 76861356. Its totient is φ = 76823040.

The previous prime is 76842187. The next prime is 76842263. The reversal of 76842197 is 79124867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79124867 = 683 ⋅115849.

It can be written as a sum of positive squares in 2 ways, for example, as 26275876 + 50566321 = 5126^2 + 7111^2 .

It is a cyclic number.

It is not a de Polignac number, because 76842197 - 2²⁰ = 75793621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76842107) 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 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (19215339).

Almost surely, 2^76842197 is an apocalyptic number.

It is an amenable number.

76842197 is a deficient number, since it is larger than the sum of its proper divisors (19159).

76842197 is a wasteful number, since it uses less digits than its factorization.

76842197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19158.

The product of its digits is 169344, while the sum is 44.

The square root of 76842197 is about 8765.9681153881. The cubic root of 76842197 is about 425.1412623843.

The spelling of 76842197 in words is "seventy-six million, eight hundred forty-two thousand, one hundred ninety-seven".