610542666 has 12 divisors (see below), whose sum is σ = 1322842482. Its totient is φ = 203514216.

The previous prime is 610542649. The next prime is 610542671. The reversal of 610542666 is 666245016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 537080625 + 73462041 = 23175^2 + 8571^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 610542666.

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, 16959501 + ... + 16959536.

Almost surely, 2^610542666 is an apocalyptic number.

610542666 is an abundant number, since it is smaller than the sum of its proper divisors (712299816).

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

610542666 is a wasteful number, since it uses less digits than its factorization.

610542666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33919045 (or 33919042 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 610542666 is about 24709.1615802722. The cubic root of 610542666 is about 848.3440266711.

The spelling of 610542666 in words is "six hundred ten million, five hundred forty-two thousand, six hundred sixty-six".