65890032 has 80 divisors (see below), whose sum is σ = 191321088. Its totient is φ = 19388160.

The previous prime is 65890021. The next prime is 65890039. The reversal of 65890032 is 23009856.

It is a happy number.

It is a super-2 number, since 2×65890032² = 8682992633922048, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 65889975 and 65890002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65890039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12057 + ... + 16647.

Almost surely, 2^65890032 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 65890032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95660544).

65890032 is an abundant number, since it is smaller than the sum of its proper divisors (125431056).

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

65890032 is a wasteful number, since it uses less digits than its factorization.

65890032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4638 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 65890032 is about 8117.2675205392. The cubic root of 65890032 is about 403.8994292681.

Adding to 65890032 its reverse (23009856), we get a palindrome (88899888).

The spelling of 65890032 in words is "sixty-five million, eight hundred ninety thousand, thirty-two".