612201040 has 80 divisors (see below), whose sum is σ = 1556507520. Its totient is φ = 222082560.

The previous prime is 612201017. The next prime is 612201061. The reversal of 612201040 is 40102216.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×612201040² = 749580226754163200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665701 + ... + 666619.

It is an arithmetic number, because the mean of its divisors is an integer number (19456344).

Almost surely, 2^612201040 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 612201040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778253760).

612201040 is an abundant number, since it is smaller than the sum of its proper divisors (944306480).

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

612201040 is a wasteful number, since it uses less digits than its factorization.

612201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1694 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 612201040 is about 24742.6967002386. The cubic root of 612201040 is about 849.1114312978. Note that the first 3 decimals are identical.

Adding to 612201040 its reverse (40102216), we get a palindrome (652303256).

The spelling of 612201040 in words is "six hundred twelve million, two hundred one thousand, forty".