65694402 has 20 divisors (see below), whose sum is σ = 147204486. Its totient is φ = 21898080.

The previous prime is 65694389. The next prime is 65694403. The reversal of 65694402 is 20449656.

It can be written as a sum of positive squares in only one way, i.e., 64304361 + 1390041 = 8019^2 + 1179^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65694403) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 202599 + ... + 202922.

Almost surely, 2^65694402 is an apocalyptic number.

65694402 is an abundant number, since it is smaller than the sum of its proper divisors (81510084).

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

65694402 is a wasteful number, since it uses less digits than its factorization.

65694402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405535 (or 405526 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 65694402 is about 8105.2083255151. The cubic root of 65694402 is about 403.4993021090.

The spelling of 65694402 in words is "sixty-five million, six hundred ninety-four thousand, four hundred two".