7720198 has 8 divisors (see below), whose sum is σ = 11893392. Its totient is φ = 3755736.

The previous prime is 7720189. The next prime is 7720201. The reversal of 7720198 is 8910277.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52090 + ... + 52237.

It is an arithmetic number, because the mean of its divisors is an integer number (1486674).

Almost surely, 2^7720198 is an apocalyptic number.

7720198 is a deficient number, since it is larger than the sum of its proper divisors (4173194).

7720198 is a wasteful number, since it uses less digits than its factorization.

7720198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104366.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 7720198 is about 2778.5244285412. The cubic root of 7720198 is about 197.6405920913.

The spelling of 7720198 in words is "seven million, seven hundred twenty thousand, one hundred ninety-eight".