61003630 has 16 divisors (see below), whose sum is σ = 109985040. Its totient is φ = 24361792.

The previous prime is 61003573. The next prime is 61003643. The reversal of 61003630 is 3630016.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61003598 and 61003607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962 + ... + 11218.

It is an arithmetic number, because the mean of its divisors is an integer number (6874065).

Almost surely, 2^61003630 is an apocalyptic number.

61003630 is a deficient number, since it is larger than the sum of its proper divisors (48981410).

61003630 is a wasteful number, since it uses less digits than its factorization.

61003630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 61003630 is about 7810.4820593866. The cubic root of 61003630 is about 393.6575266170.

Adding to 61003630 its reverse (3630016), we get a palindrome (64633646).

It can be divided in two parts, 6100 and 3630, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 61003630 in words is "sixty-one million, three thousand, six hundred thirty".