98787649 has 2 divisors, whose sum is σ = 98787650. Its totient is φ = 98787648.

The previous prime is 98787583. The next prime is 98787677. The reversal of 98787649 is 94678789.

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., 64915249 + 33872400 = 8057^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 98787649 - 2¹¹ = 98785601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98787593 and 98787602.

It is not a weakly prime, because it can be changed into another prime (98787349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49393824 + 49393825.

It is an arithmetic number, because the mean of its divisors is an integer number (49393825).

Almost surely, 2^98787649 is an apocalyptic number.

It is an amenable number.

98787649 is a deficient number, since it is larger than the sum of its proper divisors (1).

98787649 is an equidigital number, since it uses as much as digits as its factorization.

98787649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The square root of 98787649 is about 9939.1976034286. The cubic root of 98787649 is about 462.2755067312.

The spelling of 98787649 in words is "ninety-eight million, seven hundred eighty-seven thousand, six hundred forty-nine".