61813441 has 8 divisors (see below), whose sum is σ = 65544480. Its totient is φ = 58130208.

The previous prime is 61813429. The next prime is 61813447. The reversal of 61813441 is 14431816.

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-61813441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61813447) 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, 9271 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (8193060).

Almost surely, 2^61813441 is an apocalyptic number.

It is an amenable number.

61813441 is a deficient number, since it is larger than the sum of its proper divisors (3731039).

61813441 is a wasteful number, since it uses less digits than its factorization.

61813441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23903.

The product of its digits is 2304, while the sum is 28.

The square root of 61813441 is about 7862.1524406488. The cubic root of 61813441 is about 395.3917834730.

The spelling of 61813441 in words is "sixty-one million, eight hundred thirteen thousand, four hundred forty-one".