61987384 has 16 divisors (see below), whose sum is σ = 120234600. Its totient is φ = 29924832.

The previous prime is 61987379. The next prime is 61987391. The reversal of 61987384 is 48378916.

It is a happy number.

It is a congruent number.

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, 133362 + ... + 133825.

Almost surely, 2^61987384 is an apocalyptic number.

It is an amenable number.

61987384 is a deficient number, since it is larger than the sum of its proper divisors (58247216).

61987384 is a wasteful number, since it uses less digits than its factorization.

61987384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267222 (or 267218 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 61987384 is about 7873.2067164530. The cubic root of 61987384 is about 395.7623135768.

The spelling of 61987384 in words is "sixty-one million, nine hundred eighty-seven thousand, three hundred eighty-four".