98966557 has 2 divisors, whose sum is σ = 98966558. Its totient is φ = 98966556.

The previous prime is 98966533. The next prime is 98966561. The reversal of 98966557 is 75566989.

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., 78481881 + 20484676 = 8859^2 + 4526^2 .

It is a cyclic number.

It is not a de Polignac number, because 98966557 - 2⁷ = 98966429 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 98966498 and 98966507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98966597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49483278 + 49483279.

It is an arithmetic number, because the mean of its divisors is an integer number (49483279).

Almost surely, 2^98966557 is an apocalyptic number.

It is an amenable number.

98966557 is a deficient number, since it is larger than the sum of its proper divisors (1).

98966557 is an equidigital number, since it uses as much as digits as its factorization.

98966557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 55.

The square root of 98966557 is about 9948.1936551316. The cubic root of 98966557 is about 462.5544043135.

The spelling of 98966557 in words is "ninety-eight million, nine hundred sixty-six thousand, five hundred fifty-seven".