61004420 has 12 divisors (see below), whose sum is σ = 128109324. Its totient is φ = 24401760.

The previous prime is 61004369. The next prime is 61004467. The reversal of 61004420 is 2440016.

It can be written as a sum of positive squares in 2 ways, for example, as 28217344 + 32787076 = 5312^2 + 5726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1525091 + ... + 1525130.

It is an arithmetic number, because the mean of its divisors is an integer number (10675777).

Almost surely, 2^61004420 is an apocalyptic number.

It is an amenable number.

61004420 is an abundant number, since it is smaller than the sum of its proper divisors (67104904).

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

61004420 is a wasteful number, since it uses less digits than its factorization.

61004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050230 (or 3050228 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 61004420 is about 7810.5326322857. The cubic root of 61004420 is about 393.6592259044.

Adding to 61004420 its reverse (2440016), we get a palindrome (63444436).

The spelling of 61004420 in words is "sixty-one million, four thousand, four hundred twenty".