6991098 has 8 divisors (see below), whose sum is σ = 13982208. Its totient is φ = 2330364.

The previous prime is 6991093. The next prime is 6991099. The reversal of 6991098 is 8901996.

It is a sphenic number, since it is the product of 3 distinct primes.

6991098 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6991091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582586 + ... + 582597.

It is an arithmetic number, because the mean of its divisors is an integer number (1747776).

Almost surely, 2^6991098 is an apocalyptic number.

6991098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6991098 is a wasteful number, since it uses less digits than its factorization.

6991098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165188.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 6991098 is about 2644.0684559973. The cubic root of 6991098 is about 191.2119938147.

The spelling of 6991098 in words is "six million, nine hundred ninety-one thousand, ninety-eight".