65491704 has 48 divisors (see below), whose sum is σ = 179052120. Its totient is φ = 21624000.

The previous prime is 65491703. The next prime is 65491717. The reversal of 65491704 is 40719456.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65491703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3454 + ... + 11954.

Almost surely, 2^65491704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65491704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89526060).

65491704 is an abundant number, since it is smaller than the sum of its proper divisors (113560416).

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

65491704 is a wasteful number, since it uses less digits than its factorization.

65491704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620 (or 8613 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 65491704 is about 8092.6944832979. The cubic root of 65491704 is about 403.0838797790.

The spelling of 65491704 in words is "sixty-five million, four hundred ninety-one thousand, seven hundred four".