61881922 has 8 divisors (see below), whose sum is σ = 92981196. Its totient is φ = 30888192.

The previous prime is 61881901. The next prime is 61881931. The reversal of 61881922 is 22918816.

It can be written as a sum of positive squares in 2 ways, for example, as 55785961 + 6095961 = 7469^2 + 2469^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24903 + ... + 27274.

Almost surely, 2^61881922 is an apocalyptic number.

61881922 is a deficient number, since it is larger than the sum of its proper divisors (31099274).

61881922 is a wasteful number, since it uses less digits than its factorization.

61881922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52772.

The product of its digits is 13824, while the sum is 37.

The square root of 61881922 is about 7866.5063401741. The cubic root of 61881922 is about 395.5377432690.

The spelling of 61881922 in words is "sixty-one million, eight hundred eighty-one thousand, nine hundred twenty-two".