61864338 has 8 divisors (see below), whose sum is σ = 123728688. Its totient is φ = 20621444.

The previous prime is 61864331. The next prime is 61864373. The reversal of 61864338 is 83346816.

It is a sphenic number, since it is the product of 3 distinct primes.

61864338 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 61864296 and 61864305.

It is not an unprimeable number, because it can be changed into a prime (61864331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5155356 + ... + 5155367.

It is an arithmetic number, because the mean of its divisors is an integer number (15466086).

Almost surely, 2^61864338 is an apocalyptic number.

61864338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61864338 is a wasteful number, since it uses less digits than its factorization.

61864338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310728.

The product of its digits is 82944, while the sum is 39.

The square root of 61864338 is about 7865.3886108698. The cubic root of 61864338 is about 395.5002751667.

The spelling of 61864338 in words is "sixty-one million, eight hundred sixty-four thousand, three hundred thirty-eight".