67991098 has 16 divisors (see below), whose sum is σ = 116910144. Its totient is φ = 29050560.

The previous prime is 67991057. The next prime is 67991107. The reversal of 67991098 is 89019976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2488 + ... + 11923.

It is an arithmetic number, because the mean of its divisors is an integer number (7306884).

Almost surely, 2^67991098 is an apocalyptic number.

67991098 is a deficient number, since it is larger than the sum of its proper divisors (48919046).

67991098 is a wasteful number, since it uses less digits than its factorization.

67991098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14757.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 67991098 is about 8245.6714705353. The cubic root of 67991098 is about 408.1476981920.

The spelling of 67991098 in words is "sixty-seven million, nine hundred ninety-one thousand, ninety-eight".