61303630 has 16 divisors (see below), whose sum is σ = 111325104. Its totient is φ = 24304000.

The previous prime is 61303603. The next prime is 61303639. The reversal of 61303630 is 3630316.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61303639) 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, 25996 + ... + 28255.

It is an arithmetic number, because the mean of its divisors is an integer number (6957819).

Almost surely, 2^61303630 is an apocalyptic number.

61303630 is a deficient number, since it is larger than the sum of its proper divisors (50021474).

61303630 is a wasteful number, since it uses less digits than its factorization.

61303630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54371.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 61303630 is about 7829.6634665865. The cubic root of 61303630 is about 394.3017734955.

Adding to 61303630 its reverse (3630316), we get a palindrome (64933946).

The spelling of 61303630 in words is "sixty-one million, three hundred three thousand, six hundred thirty".