659621472 has 96 divisors (see below), whose sum is σ = 1849236480. Its totient is φ = 205416960.

The previous prime is 659621467. The next prime is 659621477. The reversal of 659621472 is 274126956.

It is an interprime number because it is at equal distance from previous prime (659621467) and next prime (659621477).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659621477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82483 + ... + 90125.

It is an arithmetic number, because the mean of its divisors is an integer number (19262880).

Almost surely, 2^659621472 is an apocalyptic number.

659621472 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659621472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924618240).

659621472 is an abundant number, since it is smaller than the sum of its proper divisors (1189615008).

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

659621472 is a wasteful number, since it uses less digits than its factorization.

659621472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716 (or 7708 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 659621472 is about 25683.0970095119. The cubic root of 659621472 is about 870.4922884365.

The spelling of 659621472 in words is "six hundred fifty-nine million, six hundred twenty-one thousand, four hundred seventy-two".