61563073 has 8 divisors (see below), whose sum is σ = 72326016. Its totient is φ = 51661200.

The previous prime is 61563067. The next prime is 61563077. The reversal of 61563073 is 37036516.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61563073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61563077) 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, 215113 + ... + 215398.

It is an arithmetic number, because the mean of its divisors is an integer number (9040752).

Almost surely, 2^61563073 is an apocalyptic number.

It is an amenable number.

61563073 is a deficient number, since it is larger than the sum of its proper divisors (10762943).

61563073 is a wasteful number, since it uses less digits than its factorization.

61563073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430535.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 61563073 is about 7846.2139277488. The cubic root of 61563073 is about 394.8572319594.

Adding to 61563073 its reverse (37036516), we get a palindrome (98599589).

It can be divided in two parts, 6156 and 3073, that added together give a palindrome (9229).

The spelling of 61563073 in words is "sixty-one million, five hundred sixty-three thousand, seventy-three".