65471406 has 96 divisors (see below), whose sum is σ = 177321984. Its totient is φ = 15681600.

The previous prime is 65471387. The next prime is 65471407. The reversal of 65471406 is 60417456.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65471407) 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, 65571 + ... + 66561.

It is an arithmetic number, because the mean of its divisors is an integer number (1847104).

Almost surely, 2^65471406 is an apocalyptic number.

65471406 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 65471406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88660992).

65471406 is an abundant number, since it is smaller than the sum of its proper divisors (111850578).

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

65471406 is a wasteful number, since it uses less digits than its factorization.

65471406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 65471406 is about 8091.4402920617. The cubic root of 65471406 is about 403.0422325601.

The spelling of 65471406 in words is "sixty-five million, four hundred seventy-one thousand, four hundred six".