65313738 has 96 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 17752320.

The previous prime is 65313733. The next prime is 65313739. The reversal of 65313738 is 83731356.

It is a super-3 number, since 3×65313738³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65313733) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242668 + ... + 242936.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^65313738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65313738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84913920).

65313738 is an abundant number, since it is smaller than the sum of its proper divisors (104514102).

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

65313738 is a wasteful number, since it uses less digits than its factorization.

65313738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 369 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 65313738 is about 8081.6915308616. The cubic root of 65313738 is about 402.7184375577.

The spelling of 65313738 in words is "sixty-five million, three hundred thirteen thousand, seven hundred thirty-eight".