61920984 has 32 divisors (see below), whose sum is σ = 155239920. Its totient is φ = 20582016.

The previous prime is 61920977. The next prime is 61920997. The reversal of 61920984 is 48902916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5494 + ... + 12410.

Almost surely, 2^61920984 is an apocalyptic number.

It is an amenable number.

61920984 is an abundant number, since it is smaller than the sum of its proper divisors (93318936).

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

61920984 is a wasteful number, since it uses less digits than its factorization.

61920984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7299 (or 7295 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 61920984 is about 7868.9887533278. The cubic root of 61920984 is about 395.6209514446.

The spelling of 61920984 in words is "sixty-one million, nine hundred twenty thousand, nine hundred eighty-four".