61405363 has 4 divisors (see below), whose sum is σ = 61537320. Its totient is φ = 61273408.

The previous prime is 61405349. The next prime is 61405367. The reversal of 61405363 is 36350416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61405363 - 2⁹ = 61404851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61405367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65278 + ... + 66211.

It is an arithmetic number, because the mean of its divisors is an integer number (15384330).

Almost surely, 2^61405363 is an apocalyptic number.

61405363 is a deficient number, since it is larger than the sum of its proper divisors (131957).

61405363 is a wasteful number, since it uses less digits than its factorization.

61405363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131956.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 61405363 is about 7836.1574129161. The cubic root of 61405363 is about 394.5197667497.

Adding to 61405363 its reverse (36350416), we get a palindrome (97755779).

The spelling of 61405363 in words is "sixty-one million, four hundred five thousand, three hundred sixty-three".