75709973 has 2 divisors, whose sum is σ = 75709974. Its totient is φ = 75709972.

The previous prime is 75709957. The next prime is 75710053. The reversal of 75709973 is 37990757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 2316484 = 8567^2 + 1522^2 .

It is a cyclic number.

It is not a de Polignac number, because 75709973 - 2⁴ = 75709957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75709913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37854986 + 37854987.

It is an arithmetic number, because the mean of its divisors is an integer number (37854987).

Almost surely, 2^75709973 is an apocalyptic number.

It is an amenable number.

75709973 is a deficient number, since it is larger than the sum of its proper divisors (1).

75709973 is an equidigital number, since it uses as much as digits as its factorization.

75709973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 416745, while the sum is 47.

The square root of 75709973 is about 8701.1477978483. The cubic root of 75709973 is about 423.0428543713.

The spelling of 75709973 in words is "seventy-five million, seven hundred nine thousand, nine hundred seventy-three".