65420198 has 16 divisors (see below), whose sum is σ = 99079200. Its totient is φ = 32395776.

The previous prime is 65420189. The next prime is 65420227. The reversal of 65420198 is 89102456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145478 + ... + 145926.

It is an arithmetic number, because the mean of its divisors is an integer number (6192450).

Almost surely, 2^65420198 is an apocalyptic number.

65420198 is a deficient number, since it is larger than the sum of its proper divisors (33659002).

65420198 is a wasteful number, since it uses less digits than its factorization.

65420198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 65420198 is about 8088.2753415051. The cubic root of 65420198 is about 402.9371262696.

The spelling of 65420198 in words is "sixty-five million, four hundred twenty thousand, one hundred ninety-eight".