740831645 has 16 divisors (see below), whose sum is σ = 921833472. Its totient is φ = 570948480.

The previous prime is 740831621. The next prime is 740831647. The reversal of 740831645 is 546138047.

It is not a de Polignac number, because 740831645 - 2¹⁴ = 740815261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 740831599 and 740831608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740831647) 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, 23849 + ... + 45281.

It is an arithmetic number, because the mean of its divisors is an integer number (57614592).

Almost surely, 2^740831645 is an apocalyptic number.

It is an amenable number.

740831645 is a deficient number, since it is larger than the sum of its proper divisors (181001827).

740831645 is a wasteful number, since it uses less digits than its factorization.

740831645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21692.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 740831645 is about 27218.2226642373. Note that the first 3 decimals coincide. The cubic root of 740831645 is about 904.8428835027.

The spelling of 740831645 in words is "seven hundred forty million, eight hundred thirty-one thousand, six hundred forty-five".