61353663 has 32 divisors (see below), whose sum is σ = 100154880. Its totient is φ = 32609280.

The previous prime is 61353661. The next prime is 61353667. The reversal of 61353663 is 36635316.

It is not a de Polignac number, because 61353663 - 2¹ = 61353661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61353661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30808 + ... + 32738.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^61353663 is an apocalyptic number.

61353663 is a deficient number, since it is larger than the sum of its proper divisors (38801217).

61353663 is a wasteful number, since it uses less digits than its factorization.

61353663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its digits is 29160, while the sum is 33.

The square root of 61353663 is about 7832.8579075584. The cubic root of 61353663 is about 394.4090142142.

Adding to 61353663 its reverse (36635316), we get a palindrome (97988979).

The spelling of 61353663 in words is "sixty-one million, three hundred fifty-three thousand, six hundred sixty-three".