734408644 has 12 divisors (see below), whose sum is σ = 1329533100. Its totient is φ = 354542048.

The previous prime is 734408621. The next prime is 734408657. The reversal of 734408644 is 446804437.

It can be written as a sum of positive squares in 2 ways, for example, as 563112900 + 171295744 = 23730^2 + 13088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 734408597 and 734408606.

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, 3165439 + ... + 3165670.

It is an arithmetic number, because the mean of its divisors is an integer number (110794425).

Almost surely, 2^734408644 is an apocalyptic number.

It is an amenable number.

734408644 is a deficient number, since it is larger than the sum of its proper divisors (595124456).

734408644 is a wasteful number, since it uses less digits than its factorization.

734408644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331142 (or 6331140 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 734408644 is about 27099.9749815383. The cubic root of 734408644 is about 902.2202974520.

The spelling of 734408644 in words is "seven hundred thirty-four million, four hundred eight thousand, six hundred forty-four".