74281604 has 6 divisors (see below), whose sum is σ = 129992814. Its totient is φ = 37140800.

The previous prime is 74281601. The next prime is 74281631. The reversal of 74281604 is 40618247.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 1144900 = 8552^2 + 1070^2 .

It is not an unprimeable number, because it can be changed into a prime (74281601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9285197 + ... + 9285204.

It is an arithmetic number, because the mean of its divisors is an integer number (21665469).

Almost surely, 2^74281604 is an apocalyptic number.

It is an amenable number.

74281604 is a deficient number, since it is larger than the sum of its proper divisors (55711210).

74281604 is a wasteful number, since it uses less digits than its factorization.

74281604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18570405 (or 18570403 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 74281604 is about 8618.6776247868. The cubic root of 74281604 is about 420.3655245745.

The spelling of 74281604 in words is "seventy-four million, two hundred eighty-one thousand, six hundred four".