75404689 has 2 divisors, whose sum is σ = 75404690. Its totient is φ = 75404688.

The previous prime is 75404653. The next prime is 75404717. The reversal of 75404689 is 98640457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57638464 + 17766225 = 7592^2 + 4215^2 .

It is a cyclic number.

It is not a de Polignac number, because 75404689 - 2¹⁵ = 75371921 is a prime.

It is not a weakly prime, because it can be changed into another prime (75404629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37702344 + 37702345.

It is an arithmetic number, because the mean of its divisors is an integer number (37702345).

Almost surely, 2^75404689 is an apocalyptic number.

It is an amenable number.

75404689 is a deficient number, since it is larger than the sum of its proper divisors (1).

75404689 is an equidigital number, since it uses as much as digits as its factorization.

75404689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 75404689 is about 8683.5873347367. The cubic root of 75404689 is about 422.4734789557.

The spelling of 75404689 in words is "seventy-five million, four hundred four thousand, six hundred eighty-nine".