75064889 has 2 divisors, whose sum is σ = 75064890. Its totient is φ = 75064888.

The previous prime is 75064861. The next prime is 75064909. The reversal of 75064889 is 98846057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60964864 + 14100025 = 7808^2 + 3755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75064889 is a prime.

It is not a weakly prime, because it can be changed into another prime (75064819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37532444 + 37532445.

It is an arithmetic number, because the mean of its divisors is an integer number (37532445).

Almost surely, 2^75064889 is an apocalyptic number.

It is an amenable number.

75064889 is a deficient number, since it is larger than the sum of its proper divisors (1).

75064889 is an equidigital number, since it uses as much as digits as its factorization.

75064889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 75064889 is about 8663.9995960295. Note that the first 3 decimals coincide. The cubic root of 75064889 is about 421.8379187088.

The spelling of 75064889 in words is "seventy-five million, sixty-four thousand, eight hundred eighty-nine".