61889756 has 12 divisors (see below), whose sum is σ = 108403680. Its totient is φ = 30917280.

The previous prime is 61889749. The next prime is 61889759. The reversal of 61889756 is 65798816.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61889759) 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, 1361 + ... + 11208.

It is an arithmetic number, because the mean of its divisors is an integer number (9033640).

Almost surely, 2^61889756 is an apocalyptic number.

It is an amenable number.

61889756 is a deficient number, since it is larger than the sum of its proper divisors (46513924).

61889756 is a wasteful number, since it uses less digits than its factorization.

61889756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804 (or 13802 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 61889756 is about 7867.0042582930. The cubic root of 61889756 is about 395.5544337220.

The spelling of 61889756 in words is "sixty-one million, eight hundred eighty-nine thousand, seven hundred fifty-six".