412521660 has 144 divisors (see below), whose sum is σ = 1374268896. Its totient is φ = 103514112.

The previous prime is 412521653. The next prime is 412521667. The reversal of 412521660 is 66125214.

It is an interprime number because it is at equal distance from previous prime (412521653) and next prime (412521667).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412521667) 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, 80124 + ... + 85116.

It is an arithmetic number, because the mean of its divisors is an integer number (9543534).

Almost surely, 2^412521660 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 412521660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687134448).

412521660 is an abundant number, since it is smaller than the sum of its proper divisors (961747236).

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

412521660 is a wasteful number, since it uses less digits than its factorization.

412521660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034 (or 5020 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 412521660 is about 20310.6292369291. The cubic root of 412521660 is about 744.4158055532.

Adding to 412521660 its reverse (66125214), we get a palindrome (478646874).

The spelling of 412521660 in words is "four hundred twelve million, five hundred twenty-one thousand, six hundred sixty".