65402898 has 16 divisors (see below), whose sum is σ = 142697376. Its totient is φ = 19819040.

The previous prime is 65402891. The next prime is 65402923. The reversal of 65402898 is 89820456.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65402891) 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, 495411 + ... + 495542.

It is an arithmetic number, because the mean of its divisors is an integer number (8918586).

Almost surely, 2^65402898 is an apocalyptic number.

65402898 is an abundant number, since it is smaller than the sum of its proper divisors (77294478).

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

65402898 is a wasteful number, since it uses less digits than its factorization.

65402898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990969.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 65402898 is about 8087.2058215431. The cubic root of 65402898 is about 402.9016049930.

The spelling of 65402898 in words is "sixty-five million, four hundred two thousand, eight hundred ninety-eight".