61966205 has 8 divisors (see below), whose sum is σ = 84982272. Its totient is φ = 42491088.

The previous prime is 61966199. The next prime is 61966217. The reversal of 61966205 is 50266916.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61966205 - 2⁶ = 61966141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1770463 = 61966205 / (6 + 1 + 9 + 6 + 6 + 2 + 0 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885197 + ... + 885266.

It is an arithmetic number, because the mean of its divisors is an integer number (10622784).

Almost surely, 2^61966205 is an apocalyptic number.

It is an amenable number.

61966205 is a deficient number, since it is larger than the sum of its proper divisors (23016067).

61966205 is a wasteful number, since it uses less digits than its factorization.

61966205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770475.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 61966205 is about 7871.8615968524. The cubic root of 61966205 is about 395.7172355610.

The spelling of 61966205 in words is "sixty-one million, nine hundred sixty-six thousand, two hundred five".