75859961 has 2 divisors, whose sum is σ = 75859962. Its totient is φ = 75859960.

The previous prime is 75859919. The next prime is 75859999. The reversal of 75859961 is 16995857.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40386025 + 35473936 = 6355^2 + 5956^2 .

It is a cyclic number.

It is not a de Polignac number, because 75859961 - 2²⁶ = 8751097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75856961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37929980 + 37929981.

It is an arithmetic number, because the mean of its divisors is an integer number (37929981).

Almost surely, 2^75859961 is an apocalyptic number.

It is an amenable number.

75859961 is a deficient number, since it is larger than the sum of its proper divisors (1).

75859961 is an equidigital number, since it uses as much as digits as its factorization.

75859961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 75859961 is about 8709.7623962999. The cubic root of 75859961 is about 423.3220315801.

The spelling of 75859961 in words is "seventy-five million, eight hundred fifty-nine thousand, nine hundred sixty-one".