611060140 has 48 divisors (see below), whose sum is σ = 1357009920. Its totient is φ = 230489280.

The previous prime is 611060137. The next prime is 611060147. The reversal of 611060140 is 41060116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (611060147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81135 + ... + 88345.

It is an arithmetic number, because the mean of its divisors is an integer number (28271040).

Almost surely, 2^611060140 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 611060140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678504960).

611060140 is an abundant number, since it is smaller than the sum of its proper divisors (745949780).

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

611060140 is a wasteful number, since it uses less digits than its factorization.

611060140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7462 (or 7460 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 611060140 is about 24719.6306606713. The cubic root of 611060140 is about 848.5836342824.

The spelling of 611060140 in words is "six hundred eleven million, sixty thousand, one hundred forty".