61916444 has 6 divisors (see below), whose sum is σ = 108353784. Its totient is φ = 30958220.

The previous prime is 61916443. The next prime is 61916461. The reversal of 61916444 is 44461916.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61916443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739552 + ... + 7739559.

It is an arithmetic number, because the mean of its divisors is an integer number (18058964).

Almost surely, 2^61916444 is an apocalyptic number.

It is an amenable number.

61916444 is a deficient number, since it is larger than the sum of its proper divisors (46437340).

61916444 is a wasteful number, since it uses less digits than its factorization.

61916444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15479115 (or 15479113 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 61916444 is about 7868.7002738699. The cubic root of 61916444 is about 395.6112823314.

The spelling of 61916444 in words is "sixty-one million, nine hundred sixteen thousand, four hundred forty-four".