641743470 has 48 divisors (see below), whose sum is σ = 1741083552. Its totient is φ = 163690560.

The previous prime is 641743423. The next prime is 641743513. The reversal of 641743470 is 74347146.

It is a happy number.

641743470 is a `hidden beast` number, since 641 + 7 + 4 + 3 + 4 + 7 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 152941 + ... + 157080.

It is an arithmetic number, because the mean of its divisors is an integer number (36272574).

Almost surely, 2^641743470 is an apocalyptic number.

641743470 is an abundant number, since it is smaller than the sum of its proper divisors (1099340082).

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

641743470 is a wasteful number, since it uses less digits than its factorization.

641743470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310057 (or 310054 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 641743470 is about 25332.6561970907. The cubic root of 641743470 is about 862.5557065469. Note that the first 3 decimals are identical.

The spelling of 641743470 in words is "six hundred forty-one million, seven hundred forty-three thousand, four hundred seventy".