61436443 has 8 divisors (see below), whose sum is σ = 64943120. Its totient is φ = 57957120.

The previous prime is 61436423. The next prime is 61436449. The reversal of 61436443 is 34463416.

It is a happy number.

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-61436443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61436449) 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, 2130 + ... + 11287.

It is an arithmetic number, because the mean of its divisors is an integer number (8117890).

Almost surely, 2^61436443 is an apocalyptic number.

61436443 is a deficient number, since it is larger than the sum of its proper divisors (3506677).

61436443 is a wasteful number, since it uses less digits than its factorization.

61436443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13677.

The product of its digits is 20736, while the sum is 31.

The square root of 61436443 is about 7838.1402768769. The cubic root of 61436443 is about 394.5863168880.

Adding to 61436443 its reverse (34463416), we get a palindrome (95899859).

The spelling of 61436443 in words is "sixty-one million, four hundred thirty-six thousand, four hundred forty-three".