61919850 has 48 divisors (see below), whose sum is σ = 154052640. Its totient is φ = 16459200.

The previous prime is 61919827. The next prime is 61919857. The reversal of 61919850 is 5891916.

61919850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 61919799 and 61919808.

It is not an unprimeable number, because it can be changed into a prime (61919857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75945 + ... + 76755.

It is an arithmetic number, because the mean of its divisors is an integer number (3209430).

Almost surely, 2^61919850 is an apocalyptic number.

61919850 is an abundant number, since it is smaller than the sum of its proper divisors (92132790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61919850 is a wasteful number, since it uses less digits than its factorization.

61919850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 61919850 is about 7868.9166979960. The cubic root of 61919850 is about 395.6185363404.

The spelling of 61919850 in words is "sixty-one million, nine hundred nineteen thousand, eight hundred fifty".