75566473 has 2 divisors, whose sum is σ = 75566474. Its totient is φ = 75566472.

The previous prime is 75566471. The next prime is 75566531. The reversal of 75566473 is 37466557.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63952009 + 11614464 = 7997^2 + 3408^2 .

It is a cyclic number.

It is not a de Polignac number, because 75566473 - 2¹ = 75566471 is a prime.

Together with 75566471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75566471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37783236 + 37783237.

It is an arithmetic number, because the mean of its divisors is an integer number (37783237).

Almost surely, 2^75566473 is an apocalyptic number.

It is an amenable number.

75566473 is a deficient number, since it is larger than the sum of its proper divisors (1).

75566473 is an equidigital number, since it uses as much as digits as its factorization.

75566473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529200, while the sum is 43.

The square root of 75566473 is about 8692.8978482437. The cubic root of 75566473 is about 422.7754081247.

The spelling of 75566473 in words is "seventy-five million, five hundred sixty-six thousand, four hundred seventy-three".