61881474 has 8 divisors (see below), whose sum is σ = 123762960. Its totient is φ = 20627156.

The previous prime is 61881451. The next prime is 61881481. The reversal of 61881474 is 47418816.

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

61881474 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5156784 + ... + 5156795.

It is an arithmetic number, because the mean of its divisors is an integer number (15470370).

Almost surely, 2^61881474 is an apocalyptic number.

61881474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61881474 is a wasteful number, since it uses less digits than its factorization.

61881474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313584.

The product of its digits is 43008, while the sum is 39.

The square root of 61881474 is about 7866.4778649660. The cubic root of 61881474 is about 395.5367887558.

The spelling of 61881474 in words is "sixty-one million, eight hundred eighty-one thousand, four hundred seventy-four".