61850213 has 4 divisors (see below), whose sum is σ = 61890540. Its totient is φ = 61809888.

The previous prime is 61850183. The next prime is 61850221. The reversal of 61850213 is 31205816.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6466849 + 55383364 = 2543^2 + 7442^2 .

It is a cyclic number.

It is not a de Polignac number, because 61850213 - 2¹⁰ = 61849189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61850293) 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, 17768 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (15472635).

Almost surely, 2^61850213 is an apocalyptic number.

It is an amenable number.

61850213 is a deficient number, since it is larger than the sum of its proper divisors (40327).

61850213 is a wasteful number, since it uses less digits than its factorization.

61850213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40326.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 61850213 is about 7864.4906383058. The cubic root of 61850213 is about 395.4701723816.

The spelling of 61850213 in words is "sixty-one million, eight hundred fifty thousand, two hundred thirteen".