61611893 has 8 divisors (see below), whose sum is σ = 74555712. Its totient is φ = 49703616.

The previous prime is 61611839. The next prime is 61611937. The reversal of 61611893 is 39811616.

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 61611893 - 2¹⁶ = 61546357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61611833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258755 + ... + 258992.

It is an arithmetic number, because the mean of its divisors is an integer number (9319464).

Almost surely, 2^61611893 is an apocalyptic number.

It is an amenable number.

61611893 is a deficient number, since it is larger than the sum of its proper divisors (12943819).

61611893 is a wasteful number, since it uses less digits than its factorization.

61611893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517771.

The product of its digits is 7776, while the sum is 35.

The square root of 61611893 is about 7849.3243658292. The cubic root of 61611893 is about 394.9615793427.

The spelling of 61611893 in words is "sixty-one million, six hundred eleven thousand, eight hundred ninety-three".