65213850 has 96 divisors (see below), whose sum is σ = 177738624. Its totient is φ = 15724800.

The previous prime is 65213849. The next prime is 65213851. The reversal of 65213850 is 5831256.

It is an interprime number because it is at equal distance from previous prime (65213849) and next prime (65213851).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (65213851) 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, 103035 + ... + 103665.

It is an arithmetic number, because the mean of its divisors is an integer number (1851444).

Almost surely, 2^65213850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65213850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88869312).

65213850 is an abundant number, since it is smaller than the sum of its proper divisors (112524774).

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

65213850 is a wasteful number, since it uses less digits than its factorization.

65213850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 65213850 is about 8075.5092718664. The cubic root of 65213850 is about 402.5130327686.

The spelling of 65213850 in words is "sixty-five million, two hundred thirteen thousand, eight hundred fifty".