611406530 has 64 divisors (see below), whose sum is σ = 1345185792. Its totient is φ = 195302400.

The previous prime is 611406487. The next prime is 611406533. The reversal of 611406530 is 35604116.

It is a self number, because there is not a number n which added to its sum of digits gives 611406530.

It is not an unprimeable number, because it can be changed into a prime (611406533) 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, 117647 + ... + 122733.

It is an arithmetic number, because the mean of its divisors is an integer number (21018528).

Almost surely, 2^611406530 is an apocalyptic number.

611406530 is an abundant number, since it is smaller than the sum of its proper divisors (733779262).

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

611406530 is a wasteful number, since it uses less digits than its factorization.

611406530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 611406530 is about 24726.6360429396. The cubic root of 611406530 is about 848.7439487597.

The spelling of 611406530 in words is "six hundred eleven million, four hundred six thousand, five hundred thirty".