6440741570 has 16 divisors (see below), whose sum is σ = 11756622528. Its totient is φ = 2540010480.

The previous prime is 6440741551. The next prime is 6440741591. The reversal of 6440741570 is 751470446.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4535024 + ... + 4536443.

It is an arithmetic number, because the mean of its divisors is an integer number (734788908).

Almost surely, 2^6440741570 is an apocalyptic number.

6440741570 is a deficient number, since it is larger than the sum of its proper divisors (5315880958).

6440741570 is a wasteful number, since it uses less digits than its factorization.

6440741570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9071545.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 6440741570 is about 80254.2308542048. The cubic root of 6440741570 is about 1860.5669033531.

The spelling of 6440741570 in words is "six billion, four hundred forty million, seven hundred forty-one thousand, five hundred seventy".