61220004 has 24 divisors (see below), whose sum is σ = 143246208. Its totient is φ = 20349600.

The previous prime is 61219999. The next prime is 61220021. The reversal of 61220004 is 40002216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547 + ... + 11354.

It is an arithmetic number, because the mean of its divisors is an integer number (5968592).

Almost surely, 2^61220004 is an apocalyptic number.

It is an amenable number.

61220004 is an abundant number, since it is smaller than the sum of its proper divisors (82026204).

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

61220004 is a wasteful number, since it uses less digits than its factorization.

61220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14275 (or 14273 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 61220004 is about 7824.3213124206. The cubic root of 61220004 is about 394.1223992071.

The spelling of 61220004 in words is "sixty-one million, two hundred twenty thousand, four".