641738086 has 16 divisors (see below), whose sum is σ = 1050593040. Its totient is φ = 291566880.

The previous prime is 641738029. The next prime is 641738087. The reversal of 641738086 is 680837146.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641738087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56320 + ... + 66748.

It is an arithmetic number, because the mean of its divisors is an integer number (65662065).

Almost surely, 2^641738086 is an apocalyptic number.

641738086 is a deficient number, since it is larger than the sum of its proper divisors (408854954).

641738086 is a wasteful number, since it uses less digits than its factorization.

641738086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 641738086 is about 25332.5499308696. The cubic root of 641738086 is about 862.5532943614.

The spelling of 641738086 in words is "six hundred forty-one million, seven hundred thirty-eight thousand, eighty-six".