65484990 has 64 divisors (see below), whose sum is σ = 175348800. Its totient is φ = 17390592.

The previous prime is 65484973. The next prime is 65484997. The reversal of 65484990 is 9948456.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65484997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110134 + ... + 110726.

It is an arithmetic number, because the mean of its divisors is an integer number (2739825).

Almost surely, 2^65484990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65484990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87674400).

65484990 is an abundant number, since it is smaller than the sum of its proper divisors (109863810).

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

65484990 is a wasteful number, since it uses less digits than its factorization.

65484990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 65484990 is about 8092.2796540901. The cubic root of 65484990 is about 403.0701050183.

The spelling of 65484990 in words is "sixty-five million, four hundred eighty-four thousand, nine hundred ninety".