61144630 has 8 divisors (see below), whose sum is σ = 110060352. Its totient is φ = 24457848.

The previous prime is 61144621. The next prime is 61144651. The reversal of 61144630 is 3644116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61144595 and 61144604.

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, 3057222 + ... + 3057241.

It is an arithmetic number, because the mean of its divisors is an integer number (13757544).

Almost surely, 2^61144630 is an apocalyptic number.

61144630 is a deficient number, since it is larger than the sum of its proper divisors (48915722).

61144630 is a wasteful number, since it uses less digits than its factorization.

61144630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114470.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 61144630 is about 7819.5031811490. The cubic root of 61144630 is about 393.9605850958.

Adding to 61144630 its reverse (3644116), we get a palindrome (64788746).

The spelling of 61144630 in words is "sixty-one million, one hundred forty-four thousand, six hundred thirty".