611666552 has 16 divisors (see below), whose sum is σ = 1310714160. Its totient is φ = 262142784.

The previous prime is 611666551. The next prime is 611666599. The reversal of 611666552 is 255666116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611666551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5461253 + ... + 5461364.

It is an arithmetic number, because the mean of its divisors is an integer number (81919635).

Almost surely, 2^611666552 is an apocalyptic number.

It is an amenable number.

611666552 is an abundant number, since it is smaller than the sum of its proper divisors (699047608).

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

611666552 is a wasteful number, since it uses less digits than its factorization.

611666552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922630 (or 10922626 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 611666552 is about 24731.8934172052. The cubic root of 611666552 is about 848.8642510517.

The spelling of 611666552 in words is "six hundred eleven million, six hundred sixty-six thousand, five hundred fifty-two".