75996989 has 2 divisors, whose sum is σ = 75996990. Its totient is φ = 75996988.

The previous prime is 75996971. The next prime is 75997043. The reversal of 75996989 is 98969957.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64673764 + 11323225 = 8042^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 75996989 - 2¹² = 75992893 is a prime.

It is a super-2 number, since 2×75996989² = 11551084674132242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75996689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37998494 + 37998495.

It is an arithmetic number, because the mean of its divisors is an integer number (37998495).

Almost surely, 2^75996989 is an apocalyptic number.

It is an amenable number.

75996989 is a deficient number, since it is larger than the sum of its proper divisors (1).

75996989 is an equidigital number, since it uses as much as digits as its factorization.

75996989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480, while the sum is 62.

The square root of 75996989 is about 8717.6251926772. The cubic root of 75996989 is about 423.5767644635.

The spelling of 75996989 in words is "seventy-five million, nine hundred ninety-six thousand, nine hundred eighty-nine".