61684444 has 6 divisors (see below), whose sum is σ = 107947784. Its totient is φ = 30842220.

The previous prime is 61684429. The next prime is 61684487. The reversal of 61684444 is 44448616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710552 + ... + 7710559.

Almost surely, 2^61684444 is an apocalyptic number.

It is an amenable number.

61684444 is a deficient number, since it is larger than the sum of its proper divisors (46263340).

61684444 is a wasteful number, since it uses less digits than its factorization.

61684444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15421115 (or 15421113 counting only the distinct ones).

The product of its digits is 73728, while the sum is 37.

The square root of 61684444 is about 7853.9444866895. The cubic root of 61684444 is about 395.1165473529.

It can be divided in two parts, 61684 and 444, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61684444 in words is "sixty-one million, six hundred eighty-four thousand, four hundred forty-four".