74405634 has 32 divisors (see below), whose sum is σ = 165862080. Its totient is φ = 22113792.

The previous prime is 74405633. The next prime is 74405663. The reversal of 74405634 is 43650447.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74405595 and 74405604.

It is not an unprimeable number, because it can be changed into a prime (74405633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17259 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (5183190).

Almost surely, 2^74405634 is an apocalyptic number.

74405634 is an abundant number, since it is smaller than the sum of its proper divisors (91456446).

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

74405634 is a wasteful number, since it uses less digits than its factorization.

74405634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38434.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 74405634 is about 8625.8700430739. The cubic root of 74405634 is about 420.5993596982.

The spelling of 74405634 in words is "seventy-four million, four hundred five thousand, six hundred thirty-four".