61890837 has 8 divisors (see below), whose sum is σ = 82685280. Its totient is φ = 41178480.

The previous prime is 61890799. The next prime is 61890839. The reversal of 61890837 is 73809816.

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

It is not a de Polignac number, because 61890837 - 2¹⁰ = 61889813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61890839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18739 + ... + 21792.

It is an arithmetic number, because the mean of its divisors is an integer number (10335660).

Almost surely, 2^61890837 is an apocalyptic number.

It is an amenable number.

61890837 is a deficient number, since it is larger than the sum of its proper divisors (20794443).

61890837 is a wasteful number, since it uses less digits than its factorization.

61890837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41043.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 61890837 is about 7867.0729626717. The cubic root of 61890837 is about 395.5567366979.

The spelling of 61890837 in words is "sixty-one million, eight hundred ninety thousand, eight hundred thirty-seven".