65986794 has 24 divisors (see below), whose sum is σ = 146460132. Its totient is φ = 21458880.

The previous prime is 65986783. The next prime is 65986807. The reversal of 65986794 is 49768956.

It can be written as a sum of positive squares in 2 ways, for example, as 59861169 + 6125625 = 7737^2 + 2475^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65986794.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43969 + ... + 45444.

Almost surely, 2^65986794 is an apocalyptic number.

65986794 is an abundant number, since it is smaller than the sum of its proper divisors (80473338).

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

65986794 is a wasteful number, since it uses less digits than its factorization.

65986794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89462 (or 89459 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 65986794 is about 8123.2255908598. The cubic root of 65986794 is about 404.0970464180.

The spelling of 65986794 in words is "sixty-five million, nine hundred eighty-six thousand, seven hundred ninety-four".