61933880 has 16 divisors (see below), whose sum is σ = 139351320. Its totient is φ = 24773536.

The previous prime is 61933841. The next prime is 61933897. The reversal of 61933880 is 8833916.

It is a congruent 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, 774134 + ... + 774213.

Almost surely, 2^61933880 is an apocalyptic number.

It is an amenable number.

61933880 is an abundant number, since it is smaller than the sum of its proper divisors (77417440).

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

61933880 is a wasteful number, since it uses less digits than its factorization.

61933880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548358 (or 1548354 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 61933880 is about 7869.8081298085. The cubic root of 61933880 is about 395.6484142600.

The spelling of 61933880 in words is "sixty-one million, nine hundred thirty-three thousand, eight hundred eighty".