61984047 has 8 divisors (see below), whose sum is σ = 82695600. Its totient is φ = 41297600.

The previous prime is 61984009. The next prime is 61984051. The reversal of 61984047 is 74048916.

It is a happy number.

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 61984047 - 2¹⁴ = 61967663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61983996 and 61984014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61984147) 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, 547 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (10336950).

Almost surely, 2^61984047 is an apocalyptic number.

61984047 is a deficient number, since it is larger than the sum of its proper divisors (20711553).

61984047 is a wasteful number, since it uses less digits than its factorization.

61984047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12553.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 61984047 is about 7872.9947923265. The cubic root of 61984047 is about 395.7552116879.

It can be divided in two parts, 619 and 84047, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 61984047 in words is "sixty-one million, nine hundred eighty-four thousand, forty-seven".