61436263 has 4 divisors (see below), whose sum is σ = 70212880. Its totient is φ = 52659648.

The previous prime is 61436261. The next prime is 61436267. The reversal of 61436263 is 36263416.

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 61436263 - 2¹ = 61436261 is a prime.

It is a super-2 number, since 2×61436263² = 7548828822810338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61436261) 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, 4388298 + ... + 4388311.

It is an arithmetic number, because the mean of its divisors is an integer number (17553220).

Almost surely, 2^61436263 is an apocalyptic number.

61436263 is a deficient number, since it is larger than the sum of its proper divisors (8776617).

61436263 is an equidigital number, since it uses as much as digits as its factorization.

61436263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8776616.

The product of its digits is 15552, while the sum is 31.

The square root of 61436263 is about 7838.1287945529. The cubic root of 61436263 is about 394.5859315271.

Adding to 61436263 its reverse (36263416), we get a palindrome (97699679).

The spelling of 61436263 in words is "sixty-one million, four hundred thirty-six thousand, two hundred sixty-three".