65890194 has 16 divisors (see below), whose sum is σ = 131897568. Its totient is φ = 21943872.

The previous prime is 65890189. The next prime is 65890199. The reversal of 65890194 is 49109856.

It is an interprime number because it is at equal distance from previous prime (65890189) and next prime (65890199).

It is not an unprimeable number, because it can be changed into a prime (65890199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3549 + ... + 12015.

It is an arithmetic number, because the mean of its divisors is an integer number (8243598).

Almost surely, 2^65890194 is an apocalyptic number.

65890194 is an abundant number, since it is smaller than the sum of its proper divisors (66007374).

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

65890194 is a wasteful number, since it uses less digits than its factorization.

65890194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 65890194 is about 8117.2774992605. The cubic root of 65890194 is about 403.8997602826.

The spelling of 65890194 in words is "sixty-five million, eight hundred ninety thousand, one hundred ninety-four".