61881469 has 8 divisors (see below), whose sum is σ = 68060160. Its totient is φ = 55905456.

The previous prime is 61881451. The next prime is 61881481. The reversal of 61881469 is 96418816.

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 61881469 - 2⁵ = 61881437 is a prime.

It is a super-2 number, since 2×61881469² = 7658632411195922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61881409) 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, 50029 + ... + 51250.

It is an arithmetic number, because the mean of its divisors is an integer number (8507520).

Almost surely, 2^61881469 is an apocalyptic number.

It is an amenable number.

61881469 is a deficient number, since it is larger than the sum of its proper divisors (6178691).

61881469 is a wasteful number, since it uses less digits than its factorization.

61881469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101339.

The product of its digits is 82944, while the sum is 43.

The square root of 61881469 is about 7866.4775471618. The cubic root of 61881469 is about 395.5367781027.

The spelling of 61881469 in words is "sixty-one million, eight hundred eighty-one thousand, four hundred sixty-nine".