122581604 has 6 divisors (see below), whose sum is σ = 214517814. Its totient is φ = 61290800.

The previous prime is 122581573. The next prime is 122581607. The reversal of 122581604 is 406185221.

It can be written as a sum of positive squares in only one way, i.e., 121044004 + 1537600 = 11002^2 + 1240^2 .

It is not an unprimeable number, because it can be changed into a prime (122581607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15322697 + ... + 15322704.

It is an arithmetic number, because the mean of its divisors is an integer number (35752969).

Almost surely, 2^122581604 is an apocalyptic number.

It is an amenable number.

122581604 is a deficient number, since it is larger than the sum of its proper divisors (91936210).

122581604 is a wasteful number, since it uses less digits than its factorization.

122581604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30645405 (or 30645403 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 122581604 is about 11071.6576897951. The cubic root of 122581604 is about 496.7544503986.

The spelling of 122581604 in words is "one hundred twenty-two million, five hundred eighty-one thousand, six hundred four".