75686957 has 2 divisors, whose sum is σ = 75686958. Its totient is φ = 75686956.

The previous prime is 75686939. The next prime is 75686983. The reversal of 75686957 is 75968657.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74200996 + 1485961 = 8614^2 + 1219^2 .

It is a cyclic number.

It is not a de Polignac number, because 75686957 - 2⁸ = 75686701 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75686899 and 75686908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75686927) 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 as a sum of consecutive naturals, namely, 37843478 + 37843479.

It is an arithmetic number, because the mean of its divisors is an integer number (37843479).

Almost surely, 2^75686957 is an apocalyptic number.

It is an amenable number.

75686957 is a deficient number, since it is larger than the sum of its proper divisors (1).

75686957 is an equidigital number, since it uses as much as digits as its factorization.

75686957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 53.

The square root of 75686957 is about 8699.8251131847. The cubic root of 75686957 is about 422.9999813706. Note that the first 4 decimals are identical.

The spelling of 75686957 in words is "seventy-five million, six hundred eighty-six thousand, nine hundred fifty-seven".