61200666 has 24 divisors (see below), whose sum is σ = 133822260. Its totient is φ = 20212416.

The previous prime is 61200661. The next prime is 61200679. The reversal of 61200666 is 66600216.

It can be written as a sum of positive squares in 2 ways, for example, as 60606225 + 594441 = 7785^2 + 771^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61200661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13635 + ... + 17558.

Almost surely, 2^61200666 is an apocalyptic number.

61200666 is an abundant number, since it is smaller than the sum of its proper divisors (72621594).

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

61200666 is a wasteful number, since it uses less digits than its factorization.

61200666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310 (or 31307 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61200666 is about 7823.0854526843. The cubic root of 61200666 is about 394.0808967510.

The spelling of 61200666 in words is "sixty-one million, two hundred thousand, six hundred sixty-six".