61563603 has 8 divisors (see below), whose sum is σ = 83241216. Its totient is φ = 40464200.

The previous prime is 61563587. The next prime is 61563611. The reversal of 61563603 is 30636516.

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

It is a cyclic number.

It is not a de Polignac number, because 61563603 - 2⁴ = 61563587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61563653) 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, 144303 + ... + 144728.

It is an arithmetic number, because the mean of its divisors is an integer number (10405152).

Almost surely, 2^61563603 is an apocalyptic number.

61563603 is a deficient number, since it is larger than the sum of its proper divisors (21677613).

61563603 is a wasteful number, since it uses less digits than its factorization.

61563603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289105.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 61563603 is about 7846.2477019273. The cubic root of 61563603 is about 394.8583650723.

The spelling of 61563603 in words is "sixty-one million, five hundred sixty-three thousand, six hundred three".