61804829 has 8 divisors (see below), whose sum is σ = 64572120. Its totient is φ = 59080000.

The previous prime is 61804819. The next prime is 61804867. The reversal of 61804829 is 92840816.

It can be written as a sum of positive squares in 4 ways, for example, as 17222500 + 44582329 = 4150^2 + 6677^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61804829 - 2⁸ = 61804573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61804792 and 61804801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61804819) 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, 7622 + ... + 13479.

It is an arithmetic number, because the mean of its divisors is an integer number (8071515).

Almost surely, 2^61804829 is an apocalyptic number.

It is an amenable number.

61804829 is a deficient number, since it is larger than the sum of its proper divisors (2767291).

61804829 is a wasteful number, since it uses less digits than its factorization.

61804829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21231.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 61804829 is about 7861.6047344038. The cubic root of 61804829 is about 395.3734203029.

The spelling of 61804829 in words is "sixty-one million, eight hundred four thousand, eight hundred twenty-nine".