98780137 has 2 divisors, whose sum is σ = 98780138. Its totient is φ = 98780136.

The previous prime is 98780113. The next prime is 98780141. The reversal of 98780137 is 73108789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97397161 + 1382976 = 9869^2 + 1176^2 .

It is a cyclic number.

It is not a de Polignac number, because 98780137 - 2¹⁹ = 98255849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98780093 and 98780102.

It is not a weakly prime, because it can be changed into another prime (98780197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49390068 + 49390069.

It is an arithmetic number, because the mean of its divisors is an integer number (49390069).

Almost surely, 2^98780137 is an apocalyptic number.

It is an amenable number.

98780137 is a deficient number, since it is larger than the sum of its proper divisors (1).

98780137 is an equidigital number, since it uses as much as digits as its factorization.

98780137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 98780137 is about 9938.8196985356. The cubic root of 98780137 is about 462.2637889990.

The spelling of 98780137 in words is "ninety-eight million, seven hundred eighty thousand, one hundred thirty-seven".