61642206 has 12 divisors (see below), whose sum is σ = 133558152. Its totient is φ = 20547396.

The previous prime is 61642183. The next prime is 61642237. The reversal of 61642206 is 60224616.

It is a happy number.

61642206 is a `hidden beast` number, since 616 + 42 + 2 + 0 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 61642206.

It is a congruent number.

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, 1712266 + ... + 1712301.

It is an arithmetic number, because the mean of its divisors is an integer number (11129846).

Almost surely, 2^61642206 is an apocalyptic number.

61642206 is an abundant number, since it is smaller than the sum of its proper divisors (71915946).

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

61642206 is a wasteful number, since it uses less digits than its factorization.

61642206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424575 (or 3424572 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 61642206 is about 7851.2550589062. The cubic root of 61642206 is about 395.0263423120.

The spelling of 61642206 in words is "sixty-one million, six hundred forty-two thousand, two hundred six".