612001632 has 192 divisors, whose sum is σ = 1885089024. Its totient is φ = 171786240.

The previous prime is 612001619. The next prime is 612001639. The reversal of 612001632 is 236100216.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 612001599 and 612001608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612001639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1310263 + ... + 1310729.

It is an arithmetic number, because the mean of its divisors is an integer number (9818172).

Almost surely, 2^612001632 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 612001632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942544512).

612001632 is an abundant number, since it is smaller than the sum of its proper divisors (1273087392).

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

612001632 is a wasteful number, since it uses less digits than its factorization.

612001632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 612001632 is about 24738.6667385290. Note that the first 3 decimals coincide. The cubic root of 612001632 is about 849.0192295600.

Adding to 612001632 its reverse (236100216), we get a palindrome (848101848).

The spelling of 612001632 in words is "six hundred twelve million, one thousand, six hundred thirty-two".