611020818 has 12 divisors (see below), whose sum is σ = 1323878478. Its totient is φ = 203673600.

The previous prime is 611020801. The next prime is 611020843. The reversal of 611020818 is 818020116.

It can be written as a sum of positive squares in only one way, i.e., 408727089 + 202293729 = 20217^2 + 14223^2 .

It is a junction number, because it is equal to n+sod(n) for n = 611020791 and 611020800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16972783 + ... + 16972818.

Almost surely, 2^611020818 is an apocalyptic number.

611020818 is an abundant number, since it is smaller than the sum of its proper divisors (712857660).

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

611020818 is a wasteful number, since it uses less digits than its factorization.

611020818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33945609 (or 33945606 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 611020818 is about 24718.8352880956. The cubic root of 611020818 is about 848.5654316434.

The spelling of 611020818 in words is "six hundred eleven million, twenty thousand, eight hundred eighteen".